口算题100以内不退位减法综合
100以内不进位不退位加减法口算题++++
100以内(不进位不退位)口算练习题(1)班级__________ 学号__________ 姓名__________一、口算79 - 41 = 88 - 5 = 46 + 13 = 96 - 44 =17 - 12 = 77 - 43 = 10 + 65 = 11 + 25 =88 + 10 = 69 - 9 = 12 + 14 = 65 - 30 =55 - 11 = 66 - 22 = 56 + 10 = 46 - 13 =5 + 54 = 40 + 39 = 76 - 52 = 98 - 11 =13 + 66 = 88 - 72 = 43 + 31 = 86 - 11 =2 + 25 = 20 + 36 = 57 - 22 = 89 - 2 =28 - 11 = 86 - 82 = 56 - 55 = 75 - 65 =79 - 61 = 93 - 21 = 22 + 42 = 20 + 74 =48 - 45 = 96 - 96 = 55 - 31 = 11 + 36 =17 + 12 = 80 + 20 = 26 + 3 = 64 - 34 =31 + 30 = 55 - 51 = 87 - 77 = 27 + 2 =3 + 23 = 77 - 36 = 20 + 18 = 63 + 32 =42 + 55 = 4 + 40 = 30 + 14 = 93 - 52 =4 - 4 = 20 + 31 = 84 - 74 = 53 + 40 =35 + 54 = 96 - 31 = 10 + 33 = 26 - 10 =99 - 89 = 57 - 55 = 69 - 29 = 36 - 14 =33 + 32 = 99 - 56 = 6 + 71 = 10 + 78 =18 - 5 = 34 - 11 = 68 - 37 = 0 + 38 =86 - 55 = 56 - 26 = 47 - 31 = 86 - 5 =98 - 12 = 8 - 2 = 22 + 1 = 96 - 62 =69 - 54 = 32 + 26 = 89 - 83 = 68 - 8 =54 + 21 = 88 - 81 = 49 - 33 = 85 - 5 =68 - 47 = 43 + 51 = 58 - 52 = 95 - 5 =37 - 31 = 98 - 17 = 31 + 20 = 93 - 70 =二、列竖式计算。
100以内退位减法和进位加法口算题
100以内退位减法和进位加法口算题计算23-9时,应使用的口算方法是?
A. 直接相减
B. 破十法,先算13-9
C. 凑十法,先算23-10
D. 以上都不对
下列哪个算式是100以内的进位加法?
A. 23+45
B. 89+12
C. 56+40
D. 78+20
在计算46-7时,下列哪种方法最简便?
A. 直接从46中逐个减去7
B. 先从46中减去6,再减去1
C. 先从40中减去7,再加上6
D. 使用凑十法,先算46-10再加3
下列哪个算式的结果不是100以内的数?
A. 34+65
B. 78+19
C. 56-23
D. 90+12
在进行100以内的退位减法时,下列哪个步骤是不必要的?
A. 确定被减数和减数
B. 判断是否需要退位
C. 将减数分解为两个数相加
D. 计算结果并检查
下列哪个算式的结果最接近50?
A. 43+9
B. 57-8
C. 32+19
D. 64-16
在计算68+25时,下列哪种方法最快捷?
A. 直接相加得到93
B. 先算68+20再加5
C. 先算60+25再加8
D. 使用凑整法,先算68+30再减5
下列哪个算式的结果不是通过进位加法得到的?
A. 27+8=35
B. 36+9=45
C. 48+7=55
D. 52+6=68(实际应为52+6=58,但为保持题目格式,这里故意给出一个非进位加法的错误结果作为选项)。