六年级解比例及解方程练习题
六年级解比例及解方程练习题
六年级解比例及解方程练习题解比例:1.求 x:10 = 1:4:1/3解法:将 1:4:1/3 化为同分母分数,得到 3/3 : 12/3 : 1/3,即 3:12:1.因此,x:10 = 3:12:1,可得到 x = 4.2.求 0.4:x = 1.2:2解法:交叉相乘得到 0.4 × 2 = 1.2 × x,即 0.8 = 1.2x,因此 x = 0.8 ÷ 1.2 = 0.6667.3.求 123:2.4x = 1:2543解法:交叉相乘得到 123 × 2543 = 2.4x,因此 x = 123 ×2543 ÷ 2.4 = .125.4.求 3:12 = x:0.8:4解法:将 0.8 转化为小数,得到 3:12 = x:1:5.因此,x = 0.75.5.求 :9xx3 = 4.:x解法:将 :9xx3 化简为 :27,得到 ÷ 27 = .2963.因此,x = .2963 ÷ 4. = 2300.0004.6.求 x:8 = 0.8:4解法:将 0.8 转化为分数,得到 x:8 = 2:10.因此,x = 1.7.求 2.8:4.2 = x:9.6解法:交叉相乘得到 2.8 × 9.6 = 4.2x,因此 x = 6.3.8.求 1084: = 11x:24解法:交叉相乘得到 1084 × 24 = × 11x,因此 x = 0.077.9.求 = 1.5:x解法:将 110.6 转化为分数,得到 = 15: x。
因此,x = 3011.2.10.求 6:4 = 2.4:x解法:交叉相乘得到 6x = 9.6,因此 x = 1.6.11.求 1.25:0.25 = x:1.6解法:交叉相乘得到 1.25 × 1.6 = 0.25x,因此 x = 5.12.求 3141:1425 = x:解法:交叉相乘得到 3141 × = 1425x,因此 x = 685.2.13.求 10:50 = x:40解法:交叉相乘得到 10 × 40 = 50x,因此 x = 8.14.求 6:x = 18:26解法:将 18:26 化简为 9:13,得到 6:x = 9:13.因此,x = 8.67.解方程:1.求 X:223/3 X - X = 2X + 70% X + 20% X = 3.6解法:将百分数转化为小数,得到 2.7X - X = 3.6,因此X = 3.6 ÷ 1.7 = 2.1176.2.求 X:7554/314 X + X = 121 5X - 3 × 314/545 = X ÷解法:将 X + X = 121 化简为 2X = 121,得到 X = 60.5.将5X - 3 × 314/545 = X ÷化简为 2725X - 3 × 314 = X,代入 X = 60.5 可得到 X = 497.5.3.求 X:/327 6X + 5 = 13.4 3X = X ÷ 8716解法:将 6X + 5 = 13.4 化简为 6X = 8.4,得到 X = 1.4.将3X = X ÷ 8716 化简为 X = X,代入 X = 1.4 可得到 X = 0.4.求 X:8716/732 X + X = 4X - 6 × 2解法:将 X + X = 4X - 6 × 2 化简为 2X = 4X - 12,得到 X = 6.5.求 X:X × 0.8 = 20 × 25% + 10 X = X - 15% X = 68解法:将 20 × 25% 转化为小数,得到 X × 0.8 = 5 + 10X,即 X = 5 ÷ 0.2 = 25.将 X - 15% X = 68 化简为 X = 80,代入 X ×0.8 = 5 + 10X 可得到 X = 25.6.求 X:123/3258 ÷ X = X = 12X解法:将 123/3258 ÷ X 化简为 123 ÷ 3258 = X²,得到 X = √(123/3258) = 0.122.7.求 X:4X - 3 × 9 = 29X + X = 4解法:将 4X - 3 × 9 = 29X 化简为 25X = 27,得到 X = 1.08.8.求 X:/545 X - 21 × 32 = 4 6X + 5 = 13.4 X - X = 38解法:将 X - 21 × 32 = 4 化简为 X = 676,将 6X + 5 = 13.4 化简为 X = 1.9,将 X - X = 38 化简为 X = 0.9.求 X:5310/103 X = X ÷ 1544 xxxxxxxx/xxxxxxxx X = X ÷ 12解法:将 X = X ÷ 1544 化简为 543X = X,得到 X = 0.将X = X ÷ 12 化简为 xxxxxxxxX = X,得到 X = 0.10.求 X:xxxxxxx/626 X = X ÷ 0.25 - 30% xxxxxxxx3545/+ 0.7X = 102 X + X = 42 X + X = 105 X - X = 400解法:将 X = X ÷ 0.25 - 30% 化简为 X = 4,将xxxxxxxx3545/ + 0.7X = 102 化简为 X = 149.3,将 X + X = 42化简为 X = 21,将 X + X = 105 化简为 X = 52.5,将 X - X = 400 化简为 X = 200.11.求 X:/4X - 0.375X = X × 4 X - X = 125 X - 2.4 × 5 = 8解法:将 /4X - 0.375X = X × 4 化简为 - 1.5X² = 4X²,得到 X = 18.将 X - X = 125 化简为 X = 125,将 X - 2.4 × 5 = 8 化简为 X = 3.3333.以上就是解方程及解比例的练题,希望能对大家的数学研究有所帮助。
解比例及解方程练习题
6X+5=13.4
X- X= 4χ-6=38 5X=
X= X÷ = X÷ =12
X= X= × X÷ = ÷
X-0.25= =30% 4+0.7X=102
X+ X=42 X+ X=105 X- X=400
X-0.125X=8 = X+ X=18
人教版六年级解方程及解比例练习题
解比例:
x:10= : 0.4:x=1.2:2 =
: = :x 0.8:4=x:8 :x=3:12
1.25:0.25=x:1.6 = =
x: =6: = 45:x=18:26
2.8:4.2=x:9.6 :x= : 2.8:4.2=x:9.6
x:24= : 8:x= : : =x:
22、光的传播速度是每秒钟30万千米,光年就是光在一年中所走过的距离,它是用来计量恒星间距离的单位。x- 0.8x = 16+6 20 x– 8.5= 1.5 x- x -4= 21
0.6∶4=2.4∶x6∶x= ∶ =
∶ =x∶ ∶ = ∶xx∶ =0.7∶
10∶50=x∶401.3∶x=5.2∶20x∶3.6=6∶18
∶ = ∶x = =
解方程
X- X= 2X + = 70%X + 20%X = 3.6
X× =20× 25% + 10X = X - 15%X = 68
X+ X=121 5X-3× = X÷ =12
18、建立自然保护区是保护生物多样性的有效方法,我国的九寨沟、长白山、四川卧龙等地都建立了自然保护区,自然保护区为物种的生存、繁衍提供了良好的场所。X÷ = X+ X= 4X-6× =2
新人教版六年级数学下册—解比例及解方程练习题
新人教版六年级数学下册—解比例及解方程练习题解比例:1.求解 x:10 = 1:4/3解法:交叉相乘得到 3x = 40,因此 x = 40/32.求解 0.4:x = 1.2:2解法:将分数转化为小数,得到 0.4:x = 0.6:2,交叉相乘得到 0.4 × 2 = 0.6x,因此 x = 0.4 × 2 ÷ 0.6 = 1.333.求解 123:2.4x = 1:1解法:将分数转化为小数,得到 123:2.4x = 1:1,因此2.4x = 123,解得 x = 51.254.求解 1:524/3 = 3:12解法:交叉相乘得到 3 × 524/3 = 12,因此 x = 5245.求解 4:x0.8:4 = x:8解法:将分数转化为小数,得到 4:x0.8 = x:8,交叉相乘得到 4 × 8 = 0.8x × 4,因此 x = 166.求解:9xx = 4.解法:将分数转化为小数,得到:9xx = 4.,因此 xx = ÷9 ÷ 4. = 6910.077.求解 25x:2.23 = 111:2.8解法:将分数转化为小数,得到25x:2.23 = 39.64:2.8,交叉相乘得到 2.23 × 39.64 = 2.8x × 25,因此 x = 21.978.求解 4.2:x = 9.6:x = 2.8:4.2解法:将分数转化为小数,得到 4.2:x = 9.6:x = 0.67:1,因此 x = 4.2 × 1 ÷ 0.67 = 6.279.求解 8410:xxxxxxx = x:24 = 8:x解法:交叉相乘得到 8410 × x = xxxxxxx × 24,因此 x =10.求解 110.6:1.5 = 6:4解法:将分数转化为小数,得到 110.6:1.5 = 73.73:1,交叉相乘得到 73.73 × 4 = 6x,因此 x = 492.8711.求解 0.6:4 = 2.4:x解法:交叉相乘得到 0.6x = 9.6,因此 x = 1612.求解 1.25:0.25 = x:1.6解法:交叉相乘得到 1.25 × 1.6 = 0.25x,因此 x = 813.求解 31:41.1 = x:5解法:交叉相乘得到 31 × 5 = 41.1x,因此 x = 1.5解方程:1.求解 223/3x - x = 2x + 70%x + 20%x = 3.6解法:移项得到 223/3x - 3x = 90%x - 20%x - 3.6,合并同类项得到 -5/3x = 70%x - 3.6,移项得到 x = (70%x - 3.6) ÷ (-5/3),因此 x = -122.求解 x + x = 121解法:合并同类项得到 2x = 121,因此 x = 60.53.求解 5x - 3×(x ÷ 4) = x ÷ 12解法:化简得到 17x ÷ 12 = 3x ÷ 4,移项得到 17x - 9x = 0,因此 x = 04.求解 6x + 5 = 13.4解法:移项得到 6x = 8.4,因此 x = 1.45.求解 x + x = 4x - 6×2解法:化简得到 2x = 4x - 12,移项得到 2x = 12,因此 x = 66.求解 x × 0.25 + 10x = x - 15%x = 68解法:移项得到 0.25x = -0.15x + 68,合并同类项得到0.4x = 68,因此 x = 1707.求解 x - 0.375x = x × 0.4 + 4×(x - 5)解法:化简得到 0.625x = 4x - 20,移项得到 3.375x = 20,因此 x = 5.938.求解 0.36×5 - x = x - 4.5 + 0.25x解法:移项得到 0.61x = 14.5,因此 x = 23.77 9.求解 0.2x - 0.8x = 16 + 6解法:化简得到 -0.6x = 22,因此 x = -36.67 10.求解 x + 25%x = 90解法:移项得到 1.25x = 90,因此 x = 72 11.求解 5x = 102解法:解得 x = 20.412.求解 x + x = 42解法:化简得到 2x = 42,因此 x = 2113.求解 2x + x = 105解法:化简得到 3x = 105,因此 x = 35 14.求解 x - 0.125x = 8解法:化简得到 0.875x = 8,因此 x = 9.14 15.求解 3x = x ÷ 2解法:化简得到 6x = x,因此 x = 016.求解 x - 0.375x = 4×x - x × 0.2解法:化简得到 0.625x = 3×x,因此 x = 0 17.求解 20x - 8.5 = 1.5解法:移项得到 20x = 10,因此 x = 0.518.求解 x - x - 4 = 21解法:化简得到 -4 = 21,因此无解19.求解 x + 25%x = 2x + 70%x解法:移项得到 0.75x = 0.45x,因此 x = 070% of X plus 20% of X equals 3.6.Simplifying。
六年级解比例及解方程练习题200道
六年级解比例及解方程练习题200道解比例练题:1.x = 4.82.x = 0.283.x = 3364.x = 6.35.x = 326.x = 107.x = 2158.x = 23.49.x = 4010.x = 2.1解方程练题:1.x = 3.52.x = 53.x = 144.x = 125.x = 0.86.x = 47.x = 108.x = 39.x = 510.x = 2小幅度改写:解比例练题:1.比例为: : 10 = x : 0.4,解得 x = 4.8.2.比例为:1.2 : 2 = 43 : 15 = 1 : 5 = 1 : x,解得 x = 0.28.3.比例为:1.25 : 0.25 = x : 1.6,解得 x = 336.4.比例为:2.8 : 4.2 = x : 9.6,解得 x = 6.3.5.比例为:2 : 9 = 8 : x,解得 x = 32.6.比例为:4.56 : x = 2.2 : 110,解得 x = 10.7.比例为:1 : 8 = 1 : 4.8 = 43 : x,解得 x = 215.8.比例为:0.8 : 4 = x : 8,解得 x = 23.4.9.比例为:2 : 9 = 3 : 12 = 3654 : x,解得 x = 40.10.比例为:34 : x = 3 : 12,解得 x = 2.1.解方程练题:1.解得 x = 3.5.2.解得 x = 5.3.解得 x = 14.4.解得 x = 12.5.解得 x = 0.8.6.解得 x = 4.7.解得 x = 10.8.解得 x = 3.9.解得 x = 5.10.解得 x = 2.注意:原文中有很多格式错误和明显有问题的段落,需要删除或修改。
Rewritten and formatted:1.Solve for x: x + 25% of x = 902.Solve for x: 2x + 23/5 = 5323.Solve for x: x - 0.125x = 84.Solve for x: x*(1/6 + 3/8) = 13/125.Solve for x: x - 3/7x = 12/236.Solve for x: (x - 4.5) = 7/27.Solve for x: 20x - 8.5 = 1.58.Solve for x: x - 38/7 = 99.Solve for x: 70% of x + 20% of x = 3.610.Solve for x: 4/36 x = 3/411.Solve for x: 5x - 2.4*5 = 812.Solve for x: x - 25% of x = 1013.Solve for x: x - 4/5 x - 4 = 2114.Solve for x: x - 2/x = 3/715.Solve for x: 4x * 31/5 = 20 * 425% + 10x16.Solve for x: x - 15% of x = 6817.Solve for x: x - 4/5 = 2/3 x + 20/318.Solve for x: x + 1/4 = 3/8 x + 73/819.Solve for x: 5/4 x = 2020.Solve for x: 2/3 x / 1/4 = 1221.Solve for x: 3x = 3/822.Solve for x: 4x - 3*9 = 2923.Solve for x: x + 1/4 x = 2024.Solve for x: 8/6 x + 5 = 13.425.Solve for x: x / 2/7 = 7/1626.Solve for x: 125/3 x - 21 * 2/3 = 427.Solve for x: 5/2 x - 0.36 * 5 = 3/4528.Solve for x: x + 1/2 x = 4229.Solve for x: x - 0.125x = 830.Solve for x: x * (1313/6 + 8/8) = 1231.Solve for x: (x - 4.5) = 732.Solve for x: 528/89 x = 16/5133.Solve for x: x - 3/8 x = 40034.Solve for x: x + 3/7 x = 1835.Solve for x: x * (213/3 + 2) = 32036.Solve for x: 4 + 0.7x = 10237.Solve for x: x - 3/8 x = 213/38.Solve for x: x - 7x/9 = 939.Solve for x: x - 7/9 x = 2x + 540.Solve for x: 57x/10 = 3.6 - 3.6x/541.Solve for x: x - 3/8 x = 6842.Solve for x: x - 4/5 = 2/3 x + 20/3 12 ÷ x = 3x ÷ = 35 ÷ 45 × 25 ÷ 310x - 21 × 2 ÷ 3 = 46x + 5 = 13.4 ÷ 4x × 3 ÷ 5 = 20 × 1 ÷ 4x + 3 × 8 = 121 ÷ 33x ÷ 8 ÷ 2 ÷ 7 = 7 ÷ 16 × 3 ÷ 54x - 3 × 9 = 29 + x ÷ 4x = 20 ÷ 2x - 13 ÷ 53 = 10 ÷ 2525% + 10x = 4 ÷ 5 × 5x - 3 × 55 ÷ 21 x + 7 ÷ 8 = 3 ÷ 4 × 8 ÷ 9x = 116 ÷ 6 × 51 ÷ 11 - 2 × 42(x - 2.6) = 8 ÷ 44x - 6 = 26 ÷ 5x = xxxxxxx ÷ xxxxxxxx8x ÷ 12 × 34 = x35 ÷ 26 ÷ 45 × 13 ÷ 25 × 4 = xx - 0.25 = 1 ÷ 44x - 1.6x = 36x = 3 ÷ 45 ÷ 8 : 1 ÷6 = x : 4 ÷ 15 0.3 × 6 - 3x = 1.2x ÷ 4 = 40%1 ÷ 3 : x = 3 ÷ 20 : 3 ÷ 8 2x - 1.2 = 4.825% x - 14 = 20x - 1 ÷ 6 x = 3.5 ÷ 22 ÷3 : 5 ÷ 6 = x : 0.5123.5 + 8x = 274 x - 7 × 1.3 = 8.9 x + x = 60。