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SN93370_DSTO_A1

SN93370_DSTO_A1

1
General Description
SONiX SN93370 series is a wireless video/audio processor. It supports one-way video, two-
way audio and two-way command transmission through proprietary Wi-Fi. The system provides strong coexistence and anti-interference with other wireless device. Besides point-to-point transmission, SN93370 also supports 4T1R transmission and broadcast. It is possible to display image from quad cameras on a LCD panel. SN93370 is a turnkey solution for all wireless video applications. To reduce the overall BOM cost, it integrates mono audio ADC, microphone pre-amplifier, mono audio DAC and USB 2.0 Host/Device interface. It built-in 32bit ARM Cortex™-M0 processor which can operating up to 160MHz and provide powerful CPU performance for firmware execution. Otherwise it’s also built-in a powerful ISP (image signal processor) to produce good quality image. For LCD display, it can support max. 800x600 resolution 7” LCD panel for Vehicle rear view camera/monitor application. SONiX also open SN93370 firmware SDK (in C language), PC application and hardware design guidelines for customers. It is very easy to customize and develop.

美国数学竞赛AMC8 -- 2005年真题解析(英文解析+中文解析)

美国数学竞赛AMC8 -- 2005年真题解析(英文解析+中文解析)

美国数学竞赛AMC8 – 2005年真题解析(英文解析+中文解析)Problem 1Answer: BSolution:If x is the number, then 2x=60 and x=30. Dividing the number by 2 yields 15.中文解析:按照Connie的计算,这个数乘以2是60,可知这个数是30. 应该做的计算是30除以2,因而正确答案应该是15. 答案是B。

Problem 2Answer: CSolution:Karl paid 5*2.5=$12.5. 20% of this cost that he saved is 12.5*0.2=$2.5.中文解析:Karl按原价买了5个文件夹,支付的费用是:2.5*5=12.5. 折扣价是:1.25*0.8=10。

如果Karl 等一天,可以省2.5元。

答案是C.Problem 3Answer: DSolution:Rotating square ABCD counterclockwise 45° so that the line of symmetry BD is a vertical line makes it easier to see that 4 squares need to be colored to match its corresponding square.中文解析:如上图所示,以BD为对称轴,标蓝色的方块需要涂黑。

共4块,答案是D。

Problem 4Answer: CSolution:The perimeter of the triangle is 6.1+8.2+9.7=24cm. A square's perimeter is four times its side length, since all its side lengths are equal. If the square's perimeter is 24, the side length is24/4=6, and the area is 6*6=36.中文解析:三角形的周长是:6.1+8.2+9.7=24. 正方形的周长和三角形相等,也是24,则其边长是24/4=6. 其面积是:6*6=36. 答案是C。

美国数学竞赛amc8的常用数学英语单词

美国数学竞赛amc8的常用数学英语单词

美国数学竞赛amc8的常用数学英语单词A非正态分布abnormal distribution 角angle 平均数average加plus(prep.), add(v.), addition(n.)振幅amplitude 反正弦arc sine反余弦arc cosine 反正切arc tangent 反余切arc cotangent反正割arc secant 反余割arc cosecant 被加数augend, summand加数addend 轴axis 弧arc 面积area 算术arithmetic公理axiom 代数algebra 锐角acute angle 锐角三角形acute triangleB二进制binary system 折线统计图broken line graph 底base条形统计图bar graph 重心barycentre(BrE), barycenter(AmE)C全等congruent 曲线统计图curve diagram 进位carry 计算calculation系数coefficient 三次方程cubic equation 常量constant 微积分calculus复数complex number 坐标系coordinates 组合combination 外切圆circumcircle余割cosecant 余切cotangent 余弦cosine 圆周circumference圆柱cylinder 圆锥cone 圆circle 立方体cube圆心centre(BrE), center(AmE)D小数点decimal point 小数decimal 角度degree 除divided by(prep.), divide(v.), division(n.)被除数dividend 除数divisor 数字digit分母denominator 十进制decimal system 微分differential导数derivative 定积分definite integral 行列式determinant分布distribution 十面体decahedron 十二面体dodecahedron 十二边形dodecagon 十边形decagon 直径diameterE等于equals, is equal to, is equivalent to 等式,方程式equation等边三角形equilateral trian gle 外心excentre(BrE), excenter(AmE)旁心escentre(BrE), escenter(AmE)正多边形equilateral polygon九面体enneahedron 九边形enneagon 椭圆ellipseF分数fraction 公式formula, formulae(pl.)阶乘factorial棱台frustum of a prism 圆台frustum of a coneG几何geometry 图表graphH假设hypothesis, hypotheses(pl.)十一面体hendecahedron 六边形hexagon七面体heptahedron 半球hemisphere 六面体hexahedron十一边形hendecagon 七边形heptagon 十六进制hexadecimal system柱形统计图histogram 高height 斜边hypotenuse 双曲线hyperbolaI内心incentre(BrE), incenter(AmE)二十面体icosahedron 图象imag无穷大infinite(a.)infinity(n.)无穷小infinitesimal 积分integrale等腰梯形isosceles trapezoid 不定积分indefinite integral 不等式inequation整数integer 小于is lesser than 大于is greater than大于等于is equal or greater than 线line 小于等于is equal or lesser than无效数字insignificant digit 相交intersect 无理数irrational number虚数imaginary number 等腰三角形isosceles triangle 内切圆inscribed circle极限limit 直角边leg 长length 轨迹locus, loca(pl.)M数学mathematics, maths(BrE), math(AmE)被减数minuend被乘数multiplicand, 乘数multiplicator 单项式monomial单调性monotonicity矩阵matrixN正态分布normal distribution 数number 自然数natural number分子numerator 负negative 零null, zero, nought, nilO运算符operator 运算operation 钝角obtuse angle钝角三角形obtuse triangle 垂心orthocentre(BrE), orthocenter(AmE)原点origin 八面体octahedron 八边形octagonP抛物线parabola 五面体pentahedron 平行六面体parallelepiped 相位phase周期period证明prove命题proposition 积product 正positive 多项式polynomial, multinomial 奇偶性parity 周期性periodicity 点point 面plane 平行parallel 周角perigon 平行四边形parallelogram 勾股定理Pythagorean theorem 扇形统计图pie diagram 概率,或然率probability 排列permutation 比例propotion 百分比percent 百分点percentage百分位数percentile 多面体polyhedron 圆周率p i 棱锥pyramid 棱柱prism 周长perimeter 五边形pentagon 多边形polygonQ商quotient 二次方程quadratic equation 四次方程quartic equation 四边形quadrilateralR直角梯形right trapezoid 标准差root-mean-square deviation, standard deviation 差remainder比ratio 四舍五入round 下舍入round down 上舍入round up 值域range 有理数rational number 实数real number 直角right angle 射线radial 弧度radian 直角三角形right triangle 矩形rectangle 旋转rotation 菱形rhomb, rhombus, rhombi(pl.), diamond 环ring 半径radius S正方形square 有效数字significant digit 一次方程simple equation 体solid 线段segment 平角straight angle 边side 不等边三角形scalene triangle 空间space 球sphere 正弦sine统计statistics 和sum 减minus(prep.), subtract(v.), subtraction(n.)减数subtrahend 数列,级数series 正割secant 表面积surface area 相似similar半圆semicircle 扇形sectorT梯形trapezoid 截尾truncation 定理theorem 乘times(prep.), multiply(v.), multiplication(n.)faciend 三角形triangle 正切tangent 三角trigonometry 四面体tetrahedronU未知数unknown, x-factor, y-factor, z-factor 底面undersurface 变量variable方差variance 体积volume W权weight, significance 宽width 加权平均数weighted averageX坐标轴x-axis, y-axis, z-axis 横坐标x-coordinate 纵坐标y-coordinate。

2007-2012AMC8中文试题和答案解析

2007-2012AMC8中文试题和答案解析

卤味面 起司肉燥面水饭 意大利面 人 數 A3BCDE362007年 美国AMC8 (2007年11月 日 时间40分钟)1. 如果希瑞莎能够持续6周,平均每周花10小时帮忙照顾房子,她的父母就帮她买她喜爱乐 团的入场券。

在前五周她分别花了8、11、7、12及10小时照顾房子。

在最后一周,她必须 要花多少小时去照顾房子才能获得入场券?(A) 9 (B) 10 (C) 11 (D) 12 (E) 13 。

2. 调查650位学生对面食种类的偏好。

选项包含:卤味面、起司肉燥面、水饺、意大利面,调查结果如长条图所示。

试问偏好 意大利面的学生数与偏好起司肉燥面的学生数之比值为多少?(A) 52 (B) 21 (C) 45 (D) 35 (E) 25。

3. 250的最小两个质因子之和为多少?(A) 2 (B) 5 (C) 7 (D) 10 (E) 12 。

4. 某间鬼屋有六个窗子。

小精灵乔治从一个窗子进入屋内,而从不同的另一个窗子出来的方法 共有多少种?(A) 12 (B) 15 (C) 18 (D) 30 (E) 36 。

5. 姜德想买一辆价值美金500元的越野脚踏车。

在他生日时,祖父母给他美金50元,姑姑给 他美金35元,表哥给他美金15元。

他送报纸每周可赚美金16元。

若用他生日得到的所有礼 金及送报纸所有赚得的钱去买越野脚踏车,他需要送几周的报纸才能有足够的钱? (A) 24 (B) 25 (C) 26 (D) 27 (E) 28 。

6. 在1985年美国的长途电话费是每分钟41分钱,在2005年的长途电话费是每分钟7分钱。

试求每分钟长途电话费下降的百分率最接近下列哪一项? (A) 7 (B) 17 (C) 34 (D) 41 (E) 80 。

7. 房间内5个人的平均年龄为30岁。

若其中一位18岁的人离开了房间,则剩下四个人的平均 年龄是几岁? (A) 25 (B) 26 (C) 29 (D) 33 (E) 36 。

amc8 知识点

amc8 知识点

amc8 知识点amc8知识点是美国数学竞赛(amc)第八级的一部分,是为高中学生准备的,涉及到基础数学理论、解题技巧及应用题型等内容。

amc8涉及诸多学科,包括数论、代数、几何、统计学、概率论和线性规划等,也被称为正式课程之外的研究领域,它也可以说是一个挑战学生的学科。

其中,数论是amc8知识点中最重要的部分,它涉及大整数相加、减、乘、除运算,以及素数、合数和最大公约数等问题。

有了基本的数论知识,可以帮助学生解决许多问题,例如素数的判断、最大公约数的求解以及复杂数学公式的推导等。

代数是amc8知识点的另一部分,它涉及多项式的操作,并提出了和多项式相关的各种理论,例如域、环、群、体等用于描述多项式系统的概念,并提出多项式求根的一般性方法,如正则求根定理、根定理和凯莱公式等。

此外,代数还涉及不等式、比较方法、殊环定理、原根定理等等,对学生在掌握数学知识和解决计算机问题都有很大的帮助。

几何是amc8的主要知识点之一,它包括平面几何和立体几何。

平面几何涉及平面图形的性质、关系及运算。

它涉及直线、圆、三角形、多边形等几何图形,学习者可以掌握求图形面积和体积、求图形轮廓长度等基本技巧。

立体几何涉及立体图形性质、关系和运算,包括空间运动、立体几何证明、视觉几何等等。

最后,amc8还涉及统计学、概率论和线性规划等学科,学习者可以通过学习这些学科的知识点,掌握数学的一般性规律,以及如何应用这些规律解决实际问题。

amc8知识点是一系列涉及多学科的数学知识,它不仅是数学比赛的必备知识,也是学生平时练习和考试的重要参考资料。

在学习amc8知识点时,学生要注意抓住知识点中重要的部分,充分利用知识点学习和掌握数学知识,以便在实际考核中取得更好的成绩。

AMC8词汇

AMC8词汇

AMC8词汇AMC8 Vocabulary1) 基本几何量Geometry Segment Side Edge Diagonal Base Altitude Angle Acute angle Right angle Obtuse angle2) 圆Circle Semicircle Radius Diameter3) 三角形TriangleIsosceles Equilateral4) 四边形Quadrilateral Rectangular Trapezoid5) 多边形Polygon Pentagon Hexagon Octagon Equal几何线段边(平面)棱(立体)对角线底高,垂线角锐角直角钝角圆形半圆半径直径三角形等腰等边的(三角形)四边形矩形梯形多边形五边形六边形八边形相等,等于Degree 度数Center 中心Vertex 顶点(复数vertices) Shade 阴影 Arrow 箭头Bold 黑体,加粗 Region 区域 Interval 间距 Intersection 交点 Midpoint 中点 Surface表面Circumference 圆周 Arc 弧 Sector 扇形Similar 相似 Congruent全等Rhombus 菱形Parallelogram 平行四边形 Square正方形,平方Equiangular 等角(不一定等边) Identical 完全相同的 Regular 正常的,正的(等边且等角,用于几何)1 / 3Cube 正方体 Wedge Cubic立方的Solid7) 位置关系Parallel 平行Intersect Perpendicular 垂直 Symmetry Inscribe 内接 Bisect Tangent相切8) 度量Measure 度量,测量 Wide Area 面积 Height Volume 体积 Time Perimeter 周长 Speed/rate Length长度Distance9) 单位 unitSecond 秒 Mile Minute 分钟 Mileage Hour 小时 Meter Inch 英寸 Centimeter Foot 英尺Kilometer (复数feet,1 foot =12 inches) Gallon Yard 码 Pound (1 yard=3 feet) Cent10) 代数运算Algebra OperationAdd 加 Sum Subtract 减 Difference Multiple 乘 Product Divide除Quotient11) 数列概率统计名词Sequence 数列Median Arithmetic 算数的,等差的 Mode Geometric 几何的,等比的 Range Probability 概率 Rank Statistics 统计 Maximum Mean/average平均值Minimum 2 / 3固体,立体相交对称平分三等分宽度高度时间速度距离英里里程米厘米cm 千米km加仑(体积单位)磅(重量单位)分和差乘积商中位数众数范围排序,排名最大的最小的Positive 正的 Negative 负的 Integer 整数 Fraction 分数 Prime 质数 Multiple 倍数 Divisible 可以被整除的 Remainder 余数 Factor 因子,因数GCF-Greatest common factor最大公约数 LCM-Least common multiple 最小公倍数Factorize Odd Even Digit Unit digit Tens digit Value Ratio Percentage因式分解奇数偶数数字,数位个位十位数值比率百分比,百分数13) 常用物品Penny 一分硬币 Nickel 五分硬币 Dime 一角硬币(1 dime =10 pennies) Quarter 四分之一/25分硬币(1 quarter = 25 pennies)Dollar Coin Head Tail Chip Dice/die一元硬币硬币正面硬币反面筹码骰子14) 常用名词Set Subset Union Intersect Row Column集合子集并集交集行列Grid Diagram Arrangement Score Parentheses Discount网格图表安排,排列分数,得分圆括号折扣15) 常用形容词Reverse Distinct Constant Random Consecutive Respectively倒过来,逆向不同的恒定的,保持不变的随机连续的相对应的Additional 多余的,另外的 Adjacent 相邻的 Fair 均匀的(硬币/骰子等) Clockwise 顺时针 Counterclockwise逆时针3 / 3。

amc8定理公式

amc8定理公式
amc8定理公式
AMC 8(美国数学竞赛8)是一个面向中学生的数学竞赛,涵盖了各个数学领域的题目。在 AMC 8中,没有特定的定理和公式要求,但是有一些常见的数学定理和公式可以在解题过程中帮 助到你。以下是一些常见的数学定理和公式,可能对AMC 8有所帮助:
1. 皮亚诺定理(鸽巢原理):如果有n+1个物体放入n个盒子中,那么至少有一个盒子中放入 了两个或更多的物体。
2. 勾股定理:在直角三角形中,直角边的平方等于两个直角边的平方和。
3. 平行线定理:如果两条平行线被一组平行线所截断,那么这些截断线之间的对应角相等。
amc8定理公式
4. 相似三角形定理:如果两个三角形的对应角相等,那么它们的对应边成比例。 5. 三角函数:包括正弦、余弦和正切等三角函数的定义和性质。 6. 四边形定理:如平行四边形的对角线互相平分、矩形的对角线相等等。 7. 面积公式:如矩形的面积等于长乘以宽、三角形的面积等于底乘以高的一半等。 8. 周长和周角公式:如矩形的周长等于两倍的长加两倍的宽、圆的周长等于直径乘以π等。
amc8定理公式
这些只是一些常见的定理和公式,AMC 8的题目可能涉及到更多的数学知识和技巧。参 加竞赛前,建议你熟悉并掌握这些定理和公式,同时也要注重对数学概念和解题方法的理解

美国AMC8数学考试常用单词

美国AMC8数学考试常用单词

美国数学竞赛amc8的常用数学英语单词数学mathematics, maths(BrE), math(AmE)被除数dividend 除数divisor 商quotient等于equals, is equal to, is equivalent to 大于is greater than 小于is lesser than 大于等于is equal or greater than 小于等于is equal or lesser than 运算符operator 数字digit 数number 自然数natural number 公理axiom 定理theorem 计算calculation 运算operation 证明prove 假设hypothesis, hypotheses(pl.)命题proposition 算术arithmetic 加plus(prep.), add(v.), addition(n.)被加数augend, summand 加数addend 和sum 减minus(prep.), subtract(v.), subtraction(n.)被减数minuend 减数subtrahend 差remainder 乘times(prep.), multiply(v.), multiplication(n.)被乘数multiplicand, faciend 乘数multiplicator 积product 除divided by(prep.), divide(v.), division(n.)整数integer 小数decimal 小数点decimal point 分数fraction 分子numerator 分母denominator比ratio 正positive 负negative 零null, zero, nought, nil 十进制decimal system 二进制binary system十六进制hexadecimal system 权weight, significance 进位carry 截尾truncation 四舍五入round下舍入round down 上舍入round up 有效数字significant digit 无效数字insignificant digit代数algebra 公式formula, formulae(pl.)单项式monomial 多项式polynomial, multinomial系数coefficient 未知数unknown, x-factor, y-factor, z-factor 等式,方程式equation一次方程simple equation 二次方程quadratic equation 三次方程cubic equation 四次方程quartic equation 不等式inequation 阶乘factorial 对数logarithm 指数,幂exponent 乘方power 二次方,平方square 三次方,立方cube 四次方the power of four, the fourth power n次方the power of n, the nth power开方evolution, extraction 二次方根,平方根square root 三次方根,立方根cube root四次方根the root of four, the fourth root n次方根the root of n, the nth root 集合aggregate元素element 空集void 子集subset 交集intersection 并集union 补集complement 映射mapping函数function 定义域domain, field of definition 值域range 常量constant 变量variable单调性monotonicity 奇偶性parity 周期性periodicity 图象image 数列,级数series 微积分calculus微分differential 导数derivative 极限limit 无穷大infinite(a.)infinity(n.)无穷小infinitesimal积分integral 定积分definite integral 不定积分indefinite integral 有理数rational number无理数irrational number 实数real number 虚数imaginary number 复数complex number 矩阵matrix行列式determinant 几何geometry 点point 线line 面plane 体solid 线段segment 射线radial平行parallel 相交intersect 角angle 角度degree 弧度radian 锐角acute angle 直角right angle钝角obtuse angle 平角straight angle 周角perigon 底base 边side 高height 三角形triangle锐角三角形acute triangle 直角三角形right triangle 直角边leg 斜边hypotenuse勾股定理Pythagorean theorem 钝角三角形obtuse triangle 不等边三角形scalene triangle等腰三角形isosceles triangle 等边三角形equilateral triangle 四边形quadrilateral 平行四边形parallelogram矩形rectangle 长length 宽width 菱形rhomb, rhombus, rhombi(pl.), diamond 正方形square梯形trapezoid 直角梯形right trapezoid 等腰梯形isosceles trapezoid 五边形pentagon 六边形hexagon七边形heptagon 八边形octagon 九边形enneagon 十边形decagon 十一边形hendecagon十二边形dodecagon 多边形polygon 正多边形equilateral polygon 圆circle 圆心centre(BrE), center(AmE)半径radius 直径diameter 圆周率pi 弧arc 半圆semicircle 扇形sector 环ring 椭圆ellipse圆周circumference 周长perimeter 面积area 轨迹locus, loca(pl.)相似similar 全等congruent四面体tetrahedron 五面体pentahedron 六面体hexahedron 平行六面体parallelepiped 立方体cube七面体heptahedron 八面体octahedron 九面体enneahedron 十面体decahedron 十一面体hendecahedron十二面体dodecahedron 二十面体icosahedron 多面体polyhedron 棱锥pyramid 棱柱prism棱台frustum of a prism 旋转rotation 轴axis 圆锥cone 圆柱cylinder 圆台frustum of a cone球sphere 半球hemisphere 底面undersurface 表面积surface area 体积volume 空间space坐标系coordinates 坐标轴x-axis, y-axis, z-axis 横坐标x-coordinate 纵坐标y-coordinate 原点origin双曲线hyperbola 抛物线parabola 三角trigonometry 正弦sine 余弦cosine 正切tangent余切cotangent 正割secant 余割cosecant 反正弦arc sine 反余弦arc cosine 反正切arc tangent反余切arc cotangent 反正割arc secant 反余割arc cosecant 相位phase 周期period 振幅amplitude内心incentre(BrE), incenter(AmE)外心excentre(BrE), excenter(AmE)旁心escentre(BrE), escenter(AmE)垂心orthocentre(BrE), orthocenter(AmE)重心barycentre(BrE), barycenter(AmE)内切圆inscribed circle 外切圆circumcircle 统计statistics平均数average 加权平均数weighted average 方差variance 标准差root-mean-square deviation, standard deviation 比例propotion 百分比percent 百分点percentage 百分位数percentile 排列permutation 组合combination 概率,或然率probability 分布distribution 正态分布normal distribution非正态分布abnormal distribution 图表graph 条形统计图bar graph 柱形统计图histogram折线统计图broken line graph 曲线统计图curve diagram 扇形统计图pie diagram。

AMC8配套数学名词中英文对照表解析

AMC8配套数学名词中英文对照表解析

AMC8配套数学名词中英文对照表解析Aabbreviation 简写符号;简写absolute error 绝对误差absolute value 绝对值accuracy 准确度acute angle 锐角acute-angled triangle 锐角三角形add 加addition 加法addition formula 加法公式addition law 加法定律addition law(of probability)(概率)加法定律additive property 可加性adjacent angle 邻角adjacent side 邻边algebra 代数algebraic 代数的algebraic equation 代数方程algebraic expression 代数式algebraic fraction 代数分式;代数分数式algebraic inequality 代数不等式algebraic operation 代数运算alternate angle (交)错角alternate segment 交错弓形altitude 高;高度;顶垂线;高线ambiguous case 两义情况;二义情况amount 本利和;总数analysis 分析;解析analytic geometry 解析几何angle 角angle at the centre 圆心角angle at the circumference 圆周角angle between a line and a plane 直与平面的交角angle between two planes 两平面的交角angle bisection 角平分angle bisector 角平分线;分角线angle in the alternate segment 交错弓形的圆周角angle in the same segment 同弓形内的圆周角angle of depression 俯角angle of elevation 仰角angle of greatest slope 最大斜率的角angle of inclination 倾斜角angle of intersection 相交角;交角angle of rotation 旋转角angle of the sector 扇形角angle sum of a triangle 三角形内角和angles at a point 同顶角annum(X% per annum) 年(年利率X%)anti-clockwise direction 逆时针方向;返时针方向anti-logarithm 逆对数;反对数anti-symmetric 反对称apex 顶点approach 接近;趋近approximate value 近似值approximation 近似;略计;逼近Arabic system 阿刺伯数字系统arbitrary 任意arbitrary constant 任意常数arc 弧arc length 弧长arc-cosine function 反余弦函数arc-sin function 反正弦函数arc-tangent function 反正切函数area 面积arithmetic 算术arithmetic mean 算术平均;等差中顶;算术中顶arithmetic progression 算术级数;等差级数arithmetic sequence 等差序列arithmetic series 等差级数arm 边arrow 前号ascending order 递升序ascending powers of X X 的升幂associative law 结合律assumed mean 假定平均数assumption 假定;假设average 平均;平均数;平均值average speed 平均速率axiom 公理axis 轴axis of parabola 拋物线的轴axis of symmetry 对称轴Bback substitution 回代bar chart 棒形图;条线图;条形图;线条图base (1)底;(2)基;基数base angle 底角base area 底面base line 底线base number 底数;基数base of logarithm 对数的底bearing 方位(角);角方向(角)bell-shaped curve 钟形图bias 偏差;偏倚billion 十亿binary number 二进数binary operation 二元运算binary scale 二进法binary system 二进制binomial 二项式binomial expression 二项式bisect 平分;等分bisection method 分半法;分半方法bisector 等分线;平分线boundary condition 边界条件boundary line 界(线);边界bounded 有界的bounded above 有上界的;上有界的bounded below 有下界的;下有界的bounded function 有界函数brace 大括号bracket 括号breadth 阔度broken line graph 折线图Ccalculation 计算calculator 计算器;计算器cancel 消法;相消canellation law 消去律capacity 容量Cartesian coordinates 笛卡儿坐标Cartesian plane 笛卡儿平面category 类型;范畴central line 中线central tendency 集中趋centre 中心;心centre of a circle 圆心centroid 形心;距心certain event 必然事件chance 机会change of base 基的变换change of subject 主项变换change of variable 换元;变量的换chart 图;图表checking 验算chord 弦chord of contact 切点弦circle 圆circular 圆形;圆的circular function 圆函数;三角函数circular measure 弧度法circumcentre 外心;外接圆心circumcircle 外接圆circumference 圆周circumradius 外接圆半径circumscribed circle 外接圆class 区;组;类class boundary 组界class interval 组区间;组距class limit 组限;区限class mark 组中点;区中点classification 分类clnometer 测斜仪clockwise dirction 顺时针方向closed convex region 闭凸区域closed interval 闭区间coefficient 系数coincide 迭合;重合collection of terms 并项collinear 共线collinear planes 共线面column (1)列;纵行;(2) 柱combination 组合common chord 公弦common denominator 同分母;公分母common difference 公差common divisor 公约数;公约common factor 公因子;公因子common logarithm 常用对数common multiple 公位数;公倍common ratio 公比common tangetn 公切commutative law 交换律comparable 可比较的compass 罗盘compass bearing 罗盘方位角compasses 圆规compasses construction 圆规作图complement 余;补余complementary angle 余角complementary event 互补事件complementary probability 互补概率completing the square 配方complex number 复数complex root 复数根composite number 复合数;合成数compound bar chart 综合棒形图compound discount复折扣compound interest 复利;复利息computation 计算computer 计算机;电子计算器concave 凹concave downward 凹向下的Ddata 数据decagon 十边形decay 衰变decay factor 衰变因子decimal 小数decimal place 小数位decimal point 小数点decimal system 十进制decrease 递减decreasing function 递减函数;下降函数decreasing sequence 递减序列;下降序列decreasing series 递减级数;下降级数decrement 减量deduce 演绎deduction 推论deductive reasoning 演绎推理definite 确定的;定的distance 距离distance formula 距离公式distinct roots 相异根distincr solution 相异解distribution 公布distrivutive law 分配律divide 除dividend (1)被除数;(2)股息divisible 可整除division 除法division algorithm 除法算式divisor 除数;除式;因子divisor of zero 零因子dodecagon 十二边形dot 点double root 二重根due east/ south/ west /north 向东/ 南/ 西/ 北definiton 定义degree (1)度;(2)次degree of a polynomial 多项式的次数degree of accuracy 准确度degree of precision 精确度delete 删除;删去denary number 十进数denary scale 十进法denary system 十进制denominator 分母dependence (1)相关;(2)应变dependent event(s) 相关事件;相依事件;从属事件dependent variable 应变量;应变数depreciation 折旧descending order 递降序descending powers of X X的降序detached coefficients 分离系数(法) deviation 偏差;变差deviation from the mean 离均差diagonal 对角diagram 图;图表diameter 直径difference 差digit 数字dimension 量;量网;维(数)direct proportion 正比例direct tax, direct taxation 直接税direct variation 正变(分)directed angle 有向角directed number 有向数direction 方向;方位discontinuous 间断(的);非连续(的);不连续(的)discount 折扣discount per cent 折扣百分率discrete 分立;离散discrete data 离散数据;间断数据discriminant 判别式dispersion 离差displacement 位移disprove 反证Eedge 棱;边elimination 消法elimination method 消去法;消元法elongation 伸张;展empirical data 实验数据empirical formula 实验公式empirical probability 实验概率;经验概率enclosure 界限end point 端点entire surd 整方根equal 相等equal ratios theorem 等比定理equal roots 等根equality 等(式) equality sign 等号equation 方程equation in one unknown 一元方程equation in two unknowns (variables) 二元方程equation of a straight line 直线方程equation of locus 轨迹方程equiangular 等角(的) extreme value 极值equidistant 等距(的) equilaeral 等边(的) equilateral polygon 等边多边形equilateral triangle 等边三角形equivalent 等价(的) error 误差escribed circle 旁切圆estimate 估计;估计量Euler's formula 尤拉公式;欧拉公式evaluate 计值even function 偶函数even number 偶数evenly distributed 均匀分布的event 事件exact 真确exact solution 准确解;精确解;真确解exact value 法确解;精确解;真确解example 例excentre 外心exception 例外excess 起exclusive 不包含exclusive events 互斥事件exercise 练习expand 展开expand form 展开式expansion 展式expectation 期望expectation value, expected value 期望值;预期值experiment 实验;试验experimental 试验的experimental probability 实验概率exponent 指数express…in terms of….. 以………表达expression 式;数式extension 外延;延长;扩张;扩充exterior angle 外角external angle bisector 外分角external point of division 外分点extreme point 极值点Fface 面factor 因子;因式;商factor method 因式分解法factor theorem 因子定理;因式定理factorial 阶乘factorization 因子分解;因式分解factorization of polynomial 多项式因式分解FALSE 假(的) feasible solution 可行解;容许解Fermat’s last theorem 费尔马最后定理Fibonacci number 斐波那契数;黄金分割数Fibonacci sequence 斐波那契序列fictitious mean 假定平均数figure (1)图(形);(2)数字finite 有限finite population 有限总体finite sequence 有限序列finite series 有限级数first quartile 第一四分位数first term 首项fixed deposit 定期存款fixed point 定点flow chart 流程图foot of perpendicular 垂足for all X 对所有X for each /every X 对每一Xform 形式;型formal proof 形式化的证明format 格式;规格formula(formulae) 公式four rules 四则four-figure table 四位数表fourth root 四次方根fraction 分数;分式fraction in lowest term 最简分数fractional equation 分式方程fractional index 分数指数fractionalinequality 分式不等式free fall 自由下坠frequency 频数;频率frequency distribution 频数分布;频率分布frequency distribution table 频数分布表frequency polygon 频数多边形;频率多边形frustum 平截头体function 函数function of function 复合函数;迭函数functional notation 函数记号Ggain 增益;赚;盈利gain per cent 赚率;增益率;盈利百分率game (1)对策;(2)博奕general form 一般式;通式general solution 通解;一般解general term 通项geoborad 几何板geometric mean 几何平均数;等比中项geometric progression 几何级数;等比级数geometric sequence等比序列geometric series 等比级数geometry 几何;几何学given 给定;已知golden section 黄金分割grade 等级gradient (1)斜率;倾斜率;(2)梯度grand total 总计graph 图像;图形;图表graph paper 图表纸graphical method 图解法graphical representation 图示;以图样表达graphical solution 图解greatest term 最大项greatest value 最大值grid lines 网网格线group 组;grouped data 分组数据;分类数据grouping terms 并项;集项growth 增长growth factor 增长因子H Iidentical 全等;恒等identity 等(式)identity relation 恒等关系式if and only if/iff 当且仅当;若且仅若if…., then 若….则;如果…..则illustration 例证;说明image 像点;像imaginary circle 虚圆imaginary number 虚数imaginary root 虚根implication 蕴涵式;蕴含式imply 蕴涵;蕴含impossible event 不可能事件improper fraction 假分数inclination 倾角;斜角inclined plane 斜面included angle 夹角included side 夹边inclusive 包含的;可兼的inconsistent 不相的(的);不一致(的) increase 递增;增加increasing function 递增函数interior angles on the same side of the transversal 同旁内角interior opposite angle 内对角internal bisector 内分角internal division 内分割internal point of division 内分点inter-quartile range 四分位数间距intersect 相交intersection (1)交集;(2)相交;(3)交点interval 区间intuition 直观invariance 不变性invariant (1)不变的;(2)不变量;不变式inverse 反的;逆的inverse circular function 反三角函数inverse cosine function 反余弦函数inverse function 反函数;逆函数inverse problem 逆算问题inverse proportion 反比例;逆比例inverse sine function 反正弦函数inverse tangent function 反正切函数inverse variation 反变(分);逆变(分) irrational equation 无理方程irrational number 无理数irreducibility 不可约性irregular 不规则isosceles triangle 等腰三角形increasing sequence 递增序列increasing series 递增级数increment 增量independence 独立;自变independent event 独立事件independent variable 自变量;独立变量indeterminate (1)不定的;(2)不定元;未定元indeterminate coefficient 不定系数;未定系数indeterminate form 待定型;不定型index,indices 指数;指index notation 指数记数法inequality 不等式;不等inequality sign 不等号infinite 无限;无穷infinite population 无限总体infinite sequence 无限序列;无穷序列infinite series 无限级数;无穷级数infinitely many 无穷多infinitesimal 无限小;无穷小infinity 无限(大);无穷(大)initial point 始点;起点initial side 始边initial value 初值;始值input 输入input box 输入inscribed circle 内切圆insertion 插入insertion of brackets 加括号instantaneous 瞬时的integer 整数integral index 整数指数integral solution 整数解integral value 整数值intercept 截距;截段intercept form 截距式intercept theorem 截线定理interchange 互换interest 利息interest rate 利率interest tax 利息税interior angle 内角Jjoint variation 联变(分);连变(分)Kknown 己知LMmagnitude 量;数量;长度;大小major arc 优弧;大弧major axis 长轴major sector 优扇形;大扇形major segment 优弓形;大弓形mantissa 尾数mantissa of logarithm 对数的尾数;对数的定值部many-sided figure 多边形marked price 标价mathematical induction 数学归纳法mathematical sentence 数句mathematics 数学maximize 极大maximum absolute error 最大绝对误差maximum point 极大点maximum value 极大值mean 平均(值);平均数;中数mean deviation 中均差;平均偏差measure of dispersion 离差的量度measurement 量度median (1)中位数;(2)中线meet 相交;相遇mensuration 计量;求积法method 方法method of completing square 配方法method of substitution 代换法;换元法metric unit 十进制单位mid-point 中点mid-point formula 中点公式mid-point theorem 中点定理million 百万minimize 极小minimum point 极小点minimum value 极小值minor (1)子行列式;(2)劣;较小的minor arc 劣弧;小弧minor axis 短轴minor sector 劣扇形;小扇形minor segment 劣弓形;小弓形minus 减minute 分mixednumber(fraction) 带分数modal class 众数组mode 众数model 模型monomial 单项式multinomial 多项式multiple 倍数multiple root 多重根multiplicand 被乘数multiplication 乘法multiplication law (of probability) (概率)乘法定律multiplicative property 可乘性multiplier 乘数;乘式multiply 乘mutually exclusive events 互斥事件mutually independent 独立; 互相独立mutually perpendicular lines 互相垂直Nn factorial n阶乘n th root n次根;n 次方根natural number 自然数negative 负negative angle 负角negative index 负指数negative integer 负整数negative number 负数neighborhood 邻域net 净(值)n-gon n边形nonagon 九边形non-collinear 不共线non-linear 非线性non-linear equation 非线性方程non-negative 非负的non-trivial 非平凡的non-zero 非零normal (1)垂直的;正交的;法线的 (2)正态的 (3)正常的;正规的normal curve 正态分记伲怀1分记伲徽媲伲徽忧?normal distribution 正态分布,常态分布normal form 法线式notation 记法;记号number 数number line 数线number pair 数偶number pattern 数型number plane 数平面number system 数系numeral 数字;数码numeral system 记数系统numerator 分子numerical 数值的;数字的numerical expression 数字式numerical method 计算方法;数值法Ooblique 斜的oblique cone 斜圆锥oblique triangle 斜三角形obtuse angle 钝角obtuse-angled triangle 钝角三角形octagon 八边形octahedron 八面体odd function 奇函数odd number 奇数one-one correspondence 一一对应open interval 开区间open sentence 开句operation 运算opposite angle 对角opposite interior angle 内对角opposite side 对边optimal solution 最优解order (1)序;次序;(2)阶;级ordered pair 序偶origin 原点outcome 结果output 输出overlap 交迭;相交Pparabola 拋物线parallel 平行(的) parallel lines 平行(直线) parallelogram 平行四边形parameter 参数;参变量partial fraction 部分分数;分项分式polar coordinate system 极坐标系统polar coordinates 极坐标pole 极polygon 多边形polyhedron 多面体polynomial 多项式polynomial equation 多项式方程positive 正positive index 正指数positive integer 正整数positive number 正数power (1)幂;乘方;(2)功率;(3)检定力precise 精密precision 精确度prime 素prime factor 质因子;质因素prime number 素数;质数primitive (1)本原的;原始的;(2)原函数principal (1)主要的;(2)本金prism 梭柱(体);角柱(体)prismoid平截头棱锥体probability 概率problem 应用题produce 延长product 乘积;积product rule 积法则profit 盈利profit per cent 盈利百分率profits tax 利得税progression 级数proof 证(题);证明proper fraction 真分数property 性质property tax 物业税proportion 比例proportional 成比例protractor 量角器pyramid 棱锥(体);角锥(体) Pythagoras’ Theorem 勾股定理Pythagorean triplet 毕氏三元数组partial sum 部分和partial variation 部分变(分)particular solution 特解Pascal’s triangle 帕斯卡斯三角形pattern 模型;规律pegboard 有孔版pentadecagon 十五边形pentagon 五边形per cent 百分率percentage 百分法;百分数percentage decrease 百分减少percentage error 百分误差percentage increase 百分增加percentile 百分位数perfect number 完全数perfecr square 完全平方perimeter 周长;周界period 周期periodic function 周期函数permutation 排列perpendicular 垂线;垂直(于) perpendicular bisector 垂直平分线;中垂线perpendicular line 垂直线pictogram 象形图pie chart 饼图;圆瓣图pinboard 钉板place holder 补位数字place value 位值plan (1)平面图;(2)计划plane 平面plane figure 平面图形plot 绘图plus 加point 点point circle 点圆point of contact 切点point of division 分点point ofintersection 交点point-slope form 点斜式polar axis 极轴polar coordinate plane 极坐标平面polar coordinate 极坐标系统Qquadrant 象限quadratic equation 二次方程(式) quadratic formula 二次公式quardratic function 二次函数quadratic inequality 二次不等式quadratic polynomial 四边形quantity 数量quartile 四分位数quotient 商;商式R Ssalaries tax 俸税sample 抽样;样本sample space 样本空间satisfy 满足;适合scale 比例尺;标度;图尺scalene triangle 不等边三角形;不规则三角形scientific notation 科学记数法solution of triangle 三角形解法solve 解special angle 特殊角;特别角speed 速率sphere 球形;球面square (1)平方;(2)正方形square bracket 方括号square number 正方形数;平方数square root 平方根;二次根standard deviation 标准差;标准偏离secant 割second 秒second quartile 第二四分位数(1)截面;截线;(2)截点section (1)截面;截线;(2)截点section formula 截点公式sector 扇式segment 段;节segment of a circle 弓形selling price 售价semi-circle 半圆semi-vertical angle 半顶角sentence 句;语句sequence 序列series 级数set square 三角尺;三角板shaded portion 有阴影部分shape 形状side 边;侧sign 符号;记号signed number 有符号数significant figure 有效数字similar 相似similar figures 相似图形similar triangles 相似三角形similarity 相似(性) simple equation 简易方程simple interest 单利;单利息simplify 简化simultaneous equations 联立方程simultaneous inequalities 联立不等式simultaneous linear equations in two unknowns 联合二次线性方程式sine 正弦sine formula 正弦公式slant edge 斜棱slant height 斜高slope 斜率;斜度;倾斜;坡度slope-intercept form 斜率截距式;斜截式solid 立体;固体soild with uniform corss-section 有均匀横切面的立体solution 解;解法solution of equation 方程解Uuniform 一致(的);均匀(的)uniformcross-section 均匀横切面uniform speed 匀速率uniformlydistributed 均匀分布unique solution 唯一解uniqueness 唯一性unit 单位unit area 单位面积unit circle 单位圆unit volume 单位体积unknown 未知数;未知量unlike 异类项upper bound 上界upper limit 上限upper quartile 上四分位数Vvalue 值variable 变项;变量;元;变元;变数variable speed 可变速率variance 方差variation 变数;变分verify 证明;验证vertex, vertices 顶(点);极点vertical 铅垂;垂直vertical angle 顶角vertical line 纵线;铅垂vertically opposite angles 对顶角volume 体积Wweight (1)重量;(2)权weighted average, weighted mean 加权平均数whole number 整数;完整数width 阔度without loss of generality 不失一般性Xx-axis x轴x-coordinate x坐标x-intercept x轴截距Yy-axis y轴y-coordinate y坐标y-intercept y轴截距Zzero 零zero factor 零因子zeros of a function 函数零值统计学population 母体sample 样本census 普查sampling 抽样quantitative 量的qualitative/categorical 质的discrete 离散的continuous 连续的population parameters 母体参数sample statistics 样本统计量descriptive statistics 叙述统计学inferential/inductive statistics 推论/归纳统计学levels of measurement 衡量尺度nominal scale 名目尺度ordinal scale 顺序尺度interval scale 区间尺度ratio scale 比例尺度frequency distribution 次数分配relative frequency 相对次数range 全距class midpoint 组中点class limits 组限class boundaries 组界class width 组距cumulative frequency (以下) 累加次数decumulative frequency 以上累加次数histogram 直方图pie chart 饼图ogive 肩形图frequency polygon 多边形图cumulative frequency polygon 累加次数多边形图box plot 盒须图stem and leaf plot 枝叶图measures of central tendency 中央趋势量数mean 平均数median 中位数mode 众数location measures 位置量数percentile 百分位数quartile 四分位数decile 十分位数dispersion measures 分散量数range 全距interquartile-range IQR 四分位距mean absolute deviation 平均绝对离差variance 变异数standard deviation 标准差coefficient of variation 变异系数left-skewed 左偏negative-skewed 负偏right-skewed 右偏positive-skewed 正偏contingency table 列联表sampling distribution (of a statistic)(某个统计量的) 抽样分布point estimate 点估计值point estimator 点估计式unbiased estimator 不偏点估计式efficient estimator 有效点估计式consistent estimator 一致点估计式confidence level 信赖水准confidence interval 信赖区间null hypothesis 虚无假设alternative hypothesis 对立假设left-tailed test 左尾检定right-tailed test 右尾检定two-tailed test 双尾检定test statistic 检定统计量critical value 临界值。

【精品】美国数学竞赛AMC单词表

【精品】美国数学竞赛AMC单词表

【精品】美国数学竞赛AMC单词表AMC数学单词表分类(汉英)几何geometry 点point线line面plane体solid线段segment射线radial平行parallel相交intersect角angle角度degree弧度radian锐角acute angle直角right angle钝角obtuse angle平角straight angle周角paragon底base边side高height线段line segment长length平行线parallel lines正三角形regular triangle等腰三角形isosceles triangle平行四边形parallelogram n.梯形trapezia n.菱形rhombus正方体,立方体,立方cube n. 长方体cuboid adj.圆柱column n.圆锥cone尺寸measure n.,v.半圆semicircle半径radius n. (radii pl.)直径diameter n.表面积surface area多边形polygon凸多边形convex polygon正多边形regular polygon直角right-angle直角三角形right-triangle锐角acute-angle空间space四面体tetrahedron五面体pentahedron六面体hexahedron平行六面体parallelepiped立方体cube七面体heptahedron八面体octahedron九面体enneahedron十面体decahedron十一面体hendecahedron十二面体dodecahedron二十面体icosahedron多面体polyhedron棱锥pyramid棱柱prism棱台frustum of a prism旋转rotation轴axis圆锥cone圆柱cylinder圆台frustum of a cone球sphere半球hemisphere底面undersurface表面积surface area体积volume圆circle圆心centre(BrE),center(AmE)半径radius 直径diameter圆周率pi弧arc半圆semicircle扇形sector环ring椭圆ellipse圆周circumference周长perimeter轨迹locus,loci(pl.)相似similar全等congruent三角trigonometry正弦sine余弦cosine正切tangent余切cotangent正割secant余割cosecant反正弦arcsine反余弦arccosine反正切arctangent反余切arccotangent反正割arcsecant反余割arccosecant相位phase周期period振幅amplitude内心incentre(BrE)外心excentre(BrE)旁心escentre(BrE)垂心orthocentre(BrE)重心barycentre(BrE)内切圆inscribedcircle外切圆circumcircle三角形triangle锐角三角形acute triangle直角三角形right triangle直角边leg斜边hypotenuse勾股定理Pythagorean theorem 钝角三角形obtuse triangle 不等边三角形scalene triangle 等腰三角形isosceles triangle 等边三角形equilateral triangle 四边形quadrilateral平行四边形parallelogram矩形rectangle宽width菱形rhomb,rhombus,rhombi(pl.),diamond 正方形square梯形trapezoid直角梯形right trapezoid等腰梯形isosceles trapezoid正多边形equilateral polygon代数 algebra整数integer,whole number小数decimal小数点decimal point分数fraction分子numerator分母denominator比ratio正positive负negative零null,zero,nil十进制decimal system二进制binary system十六进制hexadecimal system权weight,significance进位carry截尾truncation四舍五入round下舍入round down上舍入roundup有效数字significant digit无效数字insignificant digit公式formula,formulae(pl.)单项式monomial多项式polynomial,multinomial系数coefficient数学mathematics,maths(BrE),math(AmE)等于equals,is equal to大于is greater than小于is lesser than大于等于is equal or greater than小于等于is equal or lesser than运算符operator数字digit自然数natural number公理axiom定理theorem计算calculation运算operation证明prove假设hypothesis,hypotheses(pl.)命题proposition算术arithmetic加plus(prep.),add(v.),addition(n.)被加数augend,summand加数addend和sum减minus(prep.),subtract(v.),subtraction(n.)被减数minuend减数subtrahend余数remainder乘times(prep.),multiply(v.),multiplication(n.)被乘数multiplicand乘法multiplication积product除divided by(prep.),divide(v.),division(n.)质数prime number合数composite number正数positive number平均数mean奇数odd adj.偶数even n.偶数even integer, even number值value最小值minimum最大的,最大值maximum n.最小的,最小值minimum n.最小可能值least possible value约数,除数divisor n.最小公倍数least common multiple正整数positive integer真分数proper fraction普通分数vulgar fraction分母denominator最小公分母least common denominator分子numerator带分数mixed number余数remainder简分数simple(common)fraction 循环小数 circulating decimal 纯小数decimal faction混合小数mixed decimal百分比percentage四分之一quarter大于more than小于less than不大于not more than数字,阿拉伯数字digit n.个位数字unit’s digit十位数字tens digit个位units十位tens十分位tenths和,总数sum n.减,负,负数minus(take away) 乘数multiple差difference相等,等于equal被整除,红利dividend平均数average n.乘方power商quotient方程equation n.满足satisfy v.增加increase n.减少reduce v.坐标系coordinates坐标轴x-axis,y-axis,z-axis 横坐标x-coordinate 纵坐标y-coordinate原点origin双曲线hyperbola抛物线parabola集合set元素element空集void子集subset交集intersection并集union补集complement映射mapping函数function定义域domain,field of definition 值域range常量constant变量variable单调性monotonicity奇偶性parity周期性periodicity图象image数列,级数series微积分calculus微分differential导数derivative极限limit无穷大infinite(a.)infinity(n.)无穷小infinitesimal积分integral定积分definite integral不定积分indefinite integral有理数rational number无理数irrational number实数real number虚数imaginary number复数complex number矩阵matrix行列式determinant未知数unknown,x-factor,y-factor,z-factor 等式,方程式equation一次方程simple equation二次方程quadratic equation三次方程cubic equation四次方程quartic equation不等式inequation阶乘factorial对数logarithm指数,幂exponent乘方power二次方,平方square三次方,立方cuben次方the power of n,the nth power开方evolution,extraction二次方根,平方根square root三次方根,立方根cube rootn次方根the root of n,the nth root统计statistics平均数average加权平均数weighted average方差variance标准差root-mean-square deviation,standard deviation 比例proportion百分比percent百分点percentage百分位数percentile排列permutation组合combination概率probability分布distribution正态分布normal distribution非正态分布abnormal distribution图表graph条形统计图bar graph柱形统计图histogram折线统计图broken line graph曲线统计图curve diagram扇形统计图pie diagramAMC数学单词表分类(英汉)1常见单词side 边长perimeter n. 周长circumference 周长,圆周width宽area n.面积volume体积arithmetic progression(sequence)等差数列altitude高bisect平分divisor因子factor因子common factor公因子common multiple公倍数common divisor公因数common fraction普通分数complex fraction繁分数consecutive number连续整数consecutive even integer连续偶数consecutive odd integer连续奇数direct proportion正比inverse proportion反比distinct不同的factorial阶乘inverse倒数reciprocal倒数progression数列the extremes of a proportion比例外项the means of a proportion比例内med median中位数,中值mode众数,一组数据中出现最多的数arranged安排的add,plus加subtract减difference差multiply, times乘product积divide除divisible可被整除的divided evenly被整除dividend被除数divisor因子,除数quotient商remainder余数factorial阶乘power乘方radical sign, root sign根号round to四舍五入to the nearest四舍五入2.有关集合union并集proper subset真子集solution set解集3.有关代数式、方程和不等式algebraic term代数项like terms, similar terms同类项numerical coefficient数字系数literal coefficient字母系数inequality不等式triangle inequality三角不等式range值域original equation原方程equivalent equation同解方程等价方程linear equation线性方程(e.g.2x +6=22)4.有关分数和小数proper fraction真分数improper fraction假分数mixed number带分数vulgar fraction,common fraction普通分数 simple fraction简分数complex fraction繁分数numerator分子denominator分母(least)common denominator(最小)公分母quarter四分之一decimal fraction纯小数infinite decimal无穷小数recurring decimal循环小数tenths unit十分位5.基本数学概念arithmetic mean算术平均值weighted average加权平均值geometric mean几何平均数exponent指数,幂base乘幂的底数,底边cube立方数,立方体square root平方根cube root立方根common logarithm常用对数digit数字constant常数variable变量inverse function反函数complementary function余函数linear一次的,线性的factorization因式分解absolute value绝对值round off四舍五入6.有关数论natural number自然数positive number正数negative number负数odd integer, odd number奇数even integer, even number偶数integer, whole number整数positive whole number正整数negative whole number负整数consecutive number连续整数real number实数rational number有理数irrational(number)无理数inverse倒数composite number合数 e.g.4,6,8,9,10,12,14,15……prime number质数e.g.2,3,5,7,11,13,15……reciprocal倒数common divisor公约数multiple倍数(least)common multiple(最小)公倍数(prime)factor(质)因子common factor公因子ordinary scale, decimal scale十进制nonnegative非负的tens十位units个位mode众数median中数common ratio公比7.数列arithmetic progression(sequence)等差数列geometric progression(sequence)等比数列8.其它approximate近似(anti)clockwise(逆)顺时针方向cardinal基数ordinal序数direct proportion正比distinct不同的estimation估计,近似parentheses括号proportion比例permutation排列combination组合table表格trigonometric function三角函数unit单位,位几何部分1.所有的角alternate angle内错角corresponding angle同位角vertical angle对顶角central angle圆心角interior angle内角exterior angle外角supplementary angles补角complementary angle余角adjacent angle邻角acute angle锐角obtuse angle钝角right angle直角round angle周角straight angle平角included angle夹角2.所有的三角形equilateral triangle等边三角形scalene triangle不等边三角形isosceles triangle等腰三角形right triangle直角三角形oblique斜三角形inscribed triangle内接三角形3.有关平面图形,除三角形外semicircle半圆concentric circles同心圆quadrilateral四边形pentagon五边形hexagon六边形heptagon七边形octagon八边形nonagon九边形decagon十边形polygon多边形parallelogram平行四边形equilateral等边形plane平面square正方形,平方rectangle长方形regular polygon正多边形rhombus菱形trapezoid梯形4.其它平面图形arc弧line, straight line直线line segment线段parallel lines平行线segment of a circle弧形5.有关立体图形cube立方体,立方数rectangular solid长方体regular solid/regular polyhedron正多面体 circular cylinder圆柱体cone圆锥sphere球体solid立体的6.有关图形上的附属物altitude高depth深度side边长circumference, perimeter周长radian弧度surface area表面积volume体积arm直角三角形的股cross section横截面center of a circle圆心chord弦radius半径angle bisector角平分线diagonal对角线diameter直径edge棱/边face of a solid立体的面hypotenuse斜边included side夹边leg三角形的直角边median of a triangle三角形的中线base底边,底数(e.g.2的5次方,2就是底数) opposite直角三角形中的对边midpoint中点endpoint端点vertex(复数形式vertices)顶点tangent切线的transversal截线intercept截距7.有关坐标coordinate system坐标系rectangular coordinate直角坐标系origin原点abscissa横坐标ordinate纵坐标number line数轴quadrant象限slope斜率complex plane复平面8.其它plane geometry平面几何trigonometry三角学bisect平分circumscribe外切inscribe内切intersect相交perpendicular垂直Pythagorean theorem勾股定理congruent全等的multilateral多边的单位类cent美分penny 1美分硬币nickel5美分硬币dime一角硬币dozen打(12个)score廿(20个)Centigrade摄氏Fahrenheit华氏quart夸脱gallon加仑(1gallon=4quart)yard码meter米micron微米inch英寸foot英尺minute分(角度的度量单位,60分=1度) square measure平方单位制cubic meter立方米pint品脱(干量或液量的单位。

amc8分数线评分标准(一)

amc8分数线评分标准(一)

amc8分数线评分标准(一)AMC8分数线评分标准背景AMC8是由美国数学协会(MAA)主办的一场全国性初中数学竞赛,旨在鼓励学生对数学的兴趣和热爱,提高数学技能以及激发他们的创造力和求知欲。

什么是AMC8分数线AMC8分数线是指在AMC8竞赛中不同等级的分数线标准。

AMC8竞赛的分数线评分标准可以帮助我们了解不同等级的考试成绩,可以使我们更加理解和感受在AMC8竞赛中的学习和进步。

AMC8分数线评分标准1.AMC8合格分数线•标准:上述考试总分(40分)的50%•结果:符合合格分数线的参赛者将获得AMC8证书2.AMC8获奖分数线•一等奖–标准:上述考试总分(40分)的90%(35分)–结果:根据得分排名颁发奖项,最高称号为AMC8一等奖,数量一般限定为全球500多名•二等奖–标准:上述考试总分(40分)的75%(30分)–结果:根据得分排名颁发奖项,数量一般为全球2000多名•三等奖–标准:上述考试总分(40分)的61.5%(25分)–结果:根据得分排名颁发奖项,数量一般为全球10000多名总结AMC8分数线评分标准是AMC8竞赛中非常重要的一部分,不同的等级评分标准可以帮助我们更好地了解和分析竞赛成绩,可以促进我们更好地学习、提高和发展。

如何提高AMC8成绩如果想要在AMC8竞赛中取得好成绩,我们需要付出更多的努力和时间。

以下是一些提高AMC8成绩的建议:1.根据官网提供的AMC8学习指南进行有针对性的学习2.增加数学知识,扩展理解面3.练习数学题目,熟练解决杂题4.积极参加数学比赛,锻炼自己的思维能力和应对压力的能力5.与其他有志于数学的同学交流和讨论,分享各自学习的方法和技巧结语AMC8分数评分标准是了解AMC8竞赛成绩和进步的必备知识,提高AMC8成绩的方法也是非常可贵的。

努力学习,艰苦奋斗,相信每个人都可以在AMC8竞赛中获得自己的成就。

1985 AMC 8

1985 AMC 8

1985 AMC 8Problem 1Problem 2Problem 3Problem 4 The area of polygon , in square units, isThe bar graph shows the grades in a m athem atics class for the last grading period. If A, B, C, and D are satisfactory grades, what fraction of the grades shown in the graph are satisfactory?Problem 6A ream of paper containing sheets is cm thick. Approximately how m any sheets of this type of paper would there be in a stack cm high?A "stair-step" figure is made of alternating black and white squares in each row. Rows through are shown. All rows begin and end with a white square. The number of black squares in the row isProblem 8If , the largest number in the set isProblem 9The product of the 9 factorsProblem 10The fraction halfway between and (on the num ber line) isA piece of paper containing six joined squares labeled as shown in the diagram is folded along the edges of the squares to form a cube. The label of the face opposite the face labeled isProblem 12A square and a triangle have equal perimeters. The lengths of the three sides of the triangle are , and . The area of the square isProblem 13If you walk for minutes at a rate of and then run for minutes at a rate of , how m any miles will you have gone at the end of one hourand minutes?The difference between a sales tax and a sales tax on an item priced at $ before tax is$$$$$Problem 15How many whole numbers between and contain the digit ?Problem 16The ratio of boys to girls in Mr. Brown's math class is . If there are students in the class, how m any m ore girls than boys are in the class?Problem 17If your average score on your first six m athematics tests was and your average score on your first seven m athem atics tests was , then your score on the seventh test wasNine copies of a certain pam phlet cost less than $ while ten copies of the sam e pamphlet (at the sam e price) cost m ore than $. How m uch does one copy of this pamphlet cost?$$$$$Problem 19If the length and width of a rectangle are each increased by , then the perimeter of the rectangle is increased byProblem 20In a certain year, January had exactly four Tuesdays and four Saturdays. On what day did January fall that year?Problem 21Mr. Green receives a raise every year. His salary after four such raises has gone up by what percent?Assum e every 7-digit whole number is a possible telephone number except those that begin with or . What fraction of telephone numbers begin with and end with ?Note: All telephone numbers are 7-digit whole numbers.Problem 23King Middle School has students. Each student takes classes a day. Each teacher teaches classes. Each class has students and teacher. How many teachers are there at King Middle School?Problem 24In a m agic triangle, each of the six whole numbers is placed in one of the circles so that the sum, , of the three numbers on each side of the triangle is the sam e. The largest possible value for isFive cards are lying on a table as shown.Each card has a letter on one side and a whole number on the other side. Jane said, "If a vowel is on one side of any card, then an even num ber is on the other side." Mary showed Jane was wrong by turning over one card. Which card did Mary turn over?。

amc8知识点汇总

amc8知识点汇总

amc8知识点汇总AMC8是美国初中生数学竞赛,旨在培养学生的数学兴趣和解决问题的能力。

本文将汇总AMC8考试中的重点知识点,希望对参加AMC8考试的同学有所帮助。

1.数学基础知识首先,AMC8考试要求学生掌握基本的数学知识,包括整数、分数、小数、百分数、比例、代数、几何、数据分析等方面的知识。

学生要熟练掌握数学符号的意义和使用方法,例如加、减、乘、除、等于、大于、小于、不等于等。

2.几何几何是AMC8考试中的一个重要知识点,包括平面几何和立体几何。

学生要掌握点、线、面、角、圆、三角形、四边形、多边形等基本概念,熟悉各种几何图形的性质和计算方法,例如周长、面积、体积、角度等。

3.代数代数是AMC8考试中的另一个重要知识点,包括整式、方程、不等式、函数等方面的知识。

学生要掌握代数运算和代数式的化简方法,熟悉解方程和不等式的方法,了解函数的基本概念和性质。

4.数据分析数据分析是AMC8考试中的一个重要知识点,包括统计和概率两个方面。

学生要掌握数据的收集、整理、分析和解释方法,熟悉统计量和概率的计算方法,了解随机事件和概率分布的基本概念和性质。

5.解题技巧除了掌握基本的数学知识外,学生还需要掌握一些解题技巧,提高解题效率和准确性。

例如,学生可以通过画图、列式、归纳、反证等方法来解决数学问题,可以通过逆向思维、排除法、估算法等方法来验证答案的正确性。

6.练习和模拟考试最后,为了提高AMC8考试的成绩,学生需要进行大量的练习和模拟考试。

可以参加学校或社区组织的数学竞赛,或者参加在线的模拟考试,提高解题速度和应对压力的能力。

同时,学生还需要认真分析自己的错误和不足,及时调整学习方法和提高学习效率。

总之,AMC8考试是一项挑战性很高的数学竞赛,要想取得好成绩,学生需要充分准备,掌握基本的数学知识和解题技巧,进行大量的练习和模拟考试,不断提高自己的数学水平和竞赛能力。

希望本文能对参加AMC8考试的同学有所帮助,祝大家取得好成绩!。

美国数学竞赛AMC8考试必备词汇(字母排序)

美国数学竞赛AMC8考试必备词汇(字母排序)

AMC8词汇Aabnormal distribution 非正态分布abscissa 横坐标acute angle锐角acute triangle锐角三角形adjacent angle 邻角amplitude 振幅(anti)clockwise(逆)顺时针方向angle bisector 角平分线algebra代数alternate angle 内错角altitude 高approximate 近似的arc弧arc sine反正弦arc cosine反余弦arc tangent反正切arc cotangent 反余切arc secant 反正割arc cosecant 反余割arm 直角三角形的股arithmetic算术arithmetic mean 算术平均值arithmetic progression(sequence)等差数列augend,summand被加数axis轴axiom公理Bbase 底边,乘幂的底数(e.g.25,2是底数) bar graph条形统计图barycentre(BrE), barycenter(AmE)重心bisect 平分binary system二进制broken line graph折线统计图Ccalculus 微积分carry进位cardinal 基数capacity 容量centre(BrE), center(AmE)圆心central angle 圆心角chord 弦circumscribe 外切circumcircle外切圆circumference圆周circular cylinder 圆柱体coefficient系数column 列coordinates 坐标系common divisor 公约数common fraction 普通分数common factor 公因子common ratio 公比complex fraction 繁分数complementary function 余函数composite number 合数common logarithm 常用对数combination组合complementary angle 余角concentric circles 同心圆cone 圆锥congruent全等constant 常量,常数consecutive number 连续整数coordinate system 坐标系cosecant余割cosine 余弦cotangent 余切corresponding angle 同位角cross section 横截面curve diagram曲线统计图cube 立方数,立方体cube root 立方根cubic equation三次方程cylinder圆柱Ddenominator 分母decimal fraction 纯小数decimal小数degree角度denominator分母decimal system十进制derivative 导数definite integral 定积分determinant行列式decagon十边形decahedron十面体diagonal 对角线diameter 直径diamond菱形data数据differential微分direct proportion 正比distribution 分布distinct 不同的dividend被除数divisor除数dodecahedron十二面体dodecagon 十二边形Eexcentre(BrE), excenter(AmE)外心escentre(BrE), escenter(AmE)旁心equilateral polygon正多边形enneahedron九面体enneagon九边形ellipse椭圆edge 棱equilateral 等边形exterior angle 外角estimation 估计,近似,估算exponent 指数,幂equation 方程Ffactorization 因式分解factorial阶乘formula, formulae(pl.)公式fraction分数frustum of a prism棱台frustum of a cone圆台Ggeometry几何graph图表geometric progression(sequence)等比数列Hhypothesis, hypotheses(pl.)假设hendecahedron十一面体hexagon六边形heptahedron七面体hemisphere半球hexahedron六面体hendecagon十一边形heptagon七边形hexadecimal system十六进制histogram柱形统计图hypotenuse 斜边hyperbola双曲线Iincentre(BrE), incenter(AmE)内心icosahedron二十面体imag图象infinite(a.)infinity(n.)无穷大infinitesimal无穷小integrale积分isosceles trapezoid等腰梯形indefinite integral不定积分inequation不等式insignificant digit无效数字intersect相交imaginary number虚数isosceles triangle等腰三角形inscribed circle内切圆inequality 不等式inverse function 反函数infinite decimal 无穷小数interior angle 内角inverse 倒数intercept 截距Llimit极限leg直角边locus, loca(pl.)轨迹literal coefficient 字母系数line segment 线段Mmatrix矩阵minuend被减数multiplicand被乘数, multiplicator乘数multilateral 多边的monomial单项式monotonicity单调性mode 众数median 中数measure 度量Nnormal distribution正态分布nonagon 九边形numerator 分子number line 数轴numerical coefficient 数字系数Oobtuse angle钝角obtuse triangle钝角三角形oblique 斜三角形octahedron八面体octagon八边形operator运算符operation运算orthocentre(BrE), orthocenter(AmE)垂心origin原点ordinal 序数ordinate 纵坐标opposite 直角三角形中的对边Pparallel平行parallelogram 平行四边形parentheses 括号parallelepiped平行六面体parabola抛物线parity奇偶性periodicity周期性perimeter 周长perigon周角permutation 排列pentagon 五边形perpendicular 垂直percent 百分比percentage百分点percentile百分位数pentahedron五面体phase相位plane面pie diagram扇形统计图polynomial, multinomial多项式polygon 多边形polyhedron 多面体proper fraction 真分数probability概率,或然率proportion 比例proposition命题prism棱柱pyramid 棱锥Pythagorean theorem 勾股定理Qquotient 商quadratic equation 二次方程quartic equation四次方程quadrilateral 四边形quadrant 象限Rright trapezoid直角梯形root-mean-square deviation标准差remainder差ratio比range值域radial射线radian弧度radius半径randow 随机rotation旋转row 行rhomb, rhombus, rhombi(pl.)菱形ring环range 值域recurring decimal 循环小数reciprocal 倒数regular polygon 正多边形rectangular solid 长方体regular solid/regular polyhedron 正多面体rectangular coordinate 直角坐标系Ssignificant digit有效数字simple equation一次方程solid 体segment线段straight angle平角scalene triangle不等边三角形sphere球,球体statistics统计subtrahend减数series数列,级数secant正割semicircle半圆sector扇形supplementary angles 补角surface area 表面积slope 斜率standard deviation 标准差Ttangent 切线的tetrahedron四面体trapezoid梯形transversal 截线truncation截尾trigonometry三角,三角学Uunknown, x-factor, y-factor, z-factor未知数undersurface 底面Vvariable 变量Variance 方差vertical angle 对顶角vertex (复数形式vertices)顶点volume体积vulgar fraction普通分数Wweight, significance 权weighted average 加权平均数Xx-axis, y-axis, z-axis坐标轴x-coordinate横坐标Yy-coordinate纵坐标。

2018年AMC8考题和答案解析

2018年AMC8考题和答案解析

2017 AMC 8 考题及答案Problem 1Which of the following values is largest?Problem 2Alicia, Brenda, and Colby were the candidates in a recent election for student president. The pie chart below shows how the votes were distributed among the three candidates. If Brenda received 36 votes, then how many votes were cast all together?/wiki/index.php?title=2017_AMC_8_Problems/Proble m_2Problem 3What is the value of the expression?/wiki/index.php?title=2017_AMC_8_Problems/Proble m_3Problem 4When 0.000315 is multiplied by 7,928,564 the product is closest to which of the following?/wiki/index.php?title=2017_AMC_8_Problems/Proble m_4Problem 5What is the value of the expression?/wiki/index.php?title=2017_AMC_8_Problems/Proble m_5Problem 6If the degree measures of the angles of a triangle are in the ratio,what is the degree measure of the largest angle of the triangle?/wiki/index.php?title=2017_AMC_8_Problems/Proble m_6Problem 7Let be a 6-digit positive integer, such as 247247, whose first three digits are the same as its last three digits taken in the same order. Which ofthe following numbers must also be a factor of?/wiki/index.php?title=2017_AMC_8_Problems/Proble m_7Problem 8Malcolm wants to visit Isabella after school today and knows the street where she lives but doesn't know her house number. She tells him, "My house number has two digits, and exactly three of the following four statements about it are true."(1) It is prime.(2) It is even.(3) It is divisible by 7.(4) One of its digits is 9.This information allows Malcolm to determine Isabella's house number. What is its units digit?/wiki/index.php?title=2017_AMC_8_Problems/Proble m_8Problem 9All of Marcy's marbles are blue, red, green, or yellow. One third of her marbles are blue, one fourth of them are red, and six of them are green. What is the smallest number of yellow marbles that Marcy could have?/wiki/index.php?title=2017_AMC_8_Problems/Proble m_9Problem 10A box contains five cards, numbered 1, 2, 3, 4, and 5. Three cards are selected randomly without replacement from the box. What is the probability that 4 is the largest value selected?/wiki/index.php?title=2017_AMC_8_Problems/Proble m_10Problem 11A square-shaped floor is covered with congruent square tiles. If the total number of tiles that lie on the two diagonals is 37, how many tiles cover the floor?/wiki/index.php?title=2017_AMC_8_Problems/Proble m_11Problem 12The smallest positive integer greater than 1 that leaves a remainder of 1 when divided by 4, 5, and 6 lies between which of the following pairs of numbers?/wiki/index.php?title=2017_AMC_8_Problems/Proble m_12Problem 13Peter, Emma, and Kyler played chess with each other. Peter won 4 games and lost 2 games. Emma won 3 games and lost 3 games. If Kyler lost 3 games, how many games did he win?/wiki/index.php?title=2017_AMC_8_Problems/Proble m_13Problem 14Chloe and Zoe are both students in Ms. Demeanor's math class. Last night they each solved half of the problems in their homework assignment alone and then solved the other half together. Chloe had correct answers to only of the problems she solved alone, butoverall of her answers were correct. Zoe had correct answersto of the problems she solved alone. What was Zoe's overall percentage of correct answers?/wiki/index.php?title=2017_AMC_8_Problems/Proble m_14Problem 15In the arrangement of letters and numerals below, by how many different paths can one spell AMC8? Beginning at the A in the middle, a path allows only moves from one letter to an adjacent (above, below,left, or right, but not diagonal) letter. One example of such a path is traced in the picture./wiki/index.php?title=2017_AMC_8_Problems/Proble m_15Problem 16In the figure below, choose point on sothat and have equal perimeters. What is the areaof?/wiki/index.php?title=2017_AMC_8_Problems/Proble m_16Problem 17Starting with some gold coins and some empty treasure chests, I tried to put 9 gold coins in each treasure chest, but that left 2 treasure chests empty. So instead I put 6 gold coins in each treasure chest, but then I had 3 gold coins left over. How many gold coins did I have?/wiki/index.php?title=2017_AMC_8_Problems/Proble m_17Problem 18In the non-convex quadrilateral shown below,is a rightangle,,,, and.What is the area of quadrilateral?/wiki/index.php?title=2017_AMC_8_Problems/Proble m_18Problem 19For any positive integer, the notation denotes the product of the integers through. What is the largest integer for which is a factor of the sum?/wiki/index.php?title=2017_AMC_8_Problems/Proble m_19Problem 20An integer between and, inclusive, is chosen at random. Whatis the probability that it is an odd integer whose digits are all distinct?/wiki/index.php?title=2017_AMC_8_Problems/Proble m_20Problem 21Suppose,, and are nonzero real numbers, and. Whatare the possible value(s) for?/wiki/index.php?title=2017_AMC_8_Problems/Proble m_21Problem 22In the right triangle,,, and angle is a right angle.A semicircle is inscribed in the triangle as shown. What is the radius of the semicircle?/wiki/index.php?title=2017_AMC_8_Problems/Proble m_22Problem 23Each day for four days, Linda traveled for one hour at a speed that resulted in her traveling one mile in an integer number of minutes. Each day after the first, her speed decreased so that the number of minutes to travel one mile increased by 5 minutes over the preceding day. Each of the four days, her distance traveled was also an integer number of miles. What was the total number of miles for the four trips?/wiki/index.php?title=2017_AMC_8_Problems/Proble m_23Problem 24Mrs. Sanders has three grandchildren, who call her regularly. One calls her every three days, one calls her every four days, and one calls her every five days. All three called her on December 31, 2016. On how many days during the next year did she not receive a phone call from any of her grandchildren?/wiki/index.php?title=2017_AMC_8_Problems/Proble m_24Problem 25In the figure shown,and are line segments each of length 2,and. Arcs and are each one-sixth of a circle withradius 2. What is the area of the region shown?2017 AMC 8 Answer Key1. A2. E3. C4. D5. B6. D7. A.. 8. D9. D10.C11.C12.D13.B14.C15.D16.D17.C18.B19.D20.B21.A22.D23.C24.D25.B。

AMC8是基础?AMC81012知识范围和难度究竟如何划分?

AMC8是基础?AMC81012知识范围和难度究竟如何划分?

AMC8是基础?AMC81012知识范围和难度究竟如何划分?很多人不了解AMC8/10/12三者究竟有什么关联跟区别,今天薛薛老师在这里给大家科普一下首先先给大家说一个最关键的AMC8/10/12竞赛考试不存在先后关系,也就是说,没参加过AMC8竞赛考试的考生可以直接去考AMC10/12,学有余力的低年级(8年级及以前)考生也可以直接报考AMC10/12!AMC竞赛考察的知识范围包括(但不局限于)代数、数论、平面几何、立体几何、排列组合、概率统计、逻辑推理等。

AMC8/10/12知识点概括以上是AMC的课程设置,也是知识点概括,给大家总结一下:●AMC8知识点有简单整除性质/简单几何/简单古典概率/数列基础知识/一次方程/简单计数原理/逻辑推理/简单统计概念●AMC10知识点有简单计算与应用题/数论/平面几何(多边形与圆)/立体几何/函数方程坐标系/排列组合与统计概率●AMC12知识点有进阶平面、立体几何/进阶代数/组合计数/综合数论/复数/对数与对数函数/多项式从AMC课程设置中,我们可以把AMC8/10/12三项课程整体的知识点划分为两部分,标色的是AMC8/10/12课程中重复的知识点,其他为新知识点重合部分的知识点内容较多,知识点难度为:AMC12>AMC10>AMC8新知识点内容较少,新知识点涉及的知识范围广度为:AMC12>AMC10>AMC8所以,AMC12必然包含了AMC10的知识点,AMC10必然包含了AMC8的知识点,总体难度是AMC12>AMC10>AMC8大家也可以理解为:小学数学(AMC8)、初中数学(AMC10)、高中数学(AMC12)之间的关系AMC系列竞赛参赛规划参加了今年AMC8考试的小同学,公众号已经给大家发放了今年的真题以及答案,大家可以去估算一下自己的分数如果得分在20分以上(满分25),可以尝试报名18年2月份的AMC10考试,积累竞赛经验。

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