四年级下册乘法结合律练习题

乘法结合律的练习题40道1. 计算：(3×4)×52. 判断：(6×7)×8 等于6×(7×8)3. 用乘法结合律简化：(2×3)×4×64. 填空：(9×__)×10 = 9×(__×10)5. 计算：(7×2)×3 与7×(2×3) 的结果是否相同？6. 判断：(4×5)×6 等于4×(5×6)7. 用乘法结合律计算：(8×2)×258. 填空：(5×__)×4 = 5×(__×4)9. 计算：(3×4)×7 与3×(4×7) 的值。

10. 判断：(2×3)×4 等于2×(3×4)11. 用乘法结合律简化：(6×7)×2×312. 填空：(3×__)×8 = 3×(__×8)13. 计算：(5×6)×4 与5×(6×4) 的结果。

14. 判断：(7×8)×9 等于7×(8×9)15. 用乘法结合律计算：(9×3)×416. 填空：(2×__)×5 = 2×(__×5)17. 计算：(4×3)×2 与4×(3×2) 的值。

18. 判断：(6×7)×2 等于6×(7×2)19. 用乘法结合律简化：(5×8)×10×220. 填空：(4×__)×3= 4×(__×3)21. 计算：(7×9)×3 与7×(9×3) 的结果。

高山中心小学校本作业·数学·四年级下册
3.4 乘法交换律和结合律
班级姓名座号等级
一、选择题。

(1)8 × 7 × 125 = 7 × ( 8 × 125 )运用了( ).
A.乘法交换律
B. 乘法结合律
C. 乘法交换律和乘法结合律
D.无法判断
(2)下面算式错误的是( )。

A. 125×13×4=125×4×13
B. 25×32×125=25×4+8×125
C. 284-65+45=284-(65-45)
D. 88×125=11×8×125
二、用简便方法计算。

28×5×40 24×4×250×5 (50×125)×(4×8)
三、解决问题。

1. 宁宁家住在9楼，距离地面25 m, 他每天乘电梯上、下楼两个来回。

照这样计算，宁宁一个星期(按7天计算)乘电梯上下多少米？
2.疫情期间，林先生向学校捐赠了8箱口罩，每箱有4包，每包里有125个口罩。

林先生一共向学校捐赠了多少个口罩?
3.要使下面算式中5个数的积的末尾有5个0，（）里最小可以填多少？
16×5×25×25×（）。

四年级下册乘法运算定律专项练习姓名：乘法交换律、乘法结合律1、乘法交换律：交换两个因数的位置，积不变。

用字母表示为：a ×b ＝b ×a2 、多个数相乘，任意交换因数的位置，积不变。

如a ×b ×c ×d ＝b ×d ×a ×c3 、乘法结合律：三个数相乘，先乘前两个数，或者先乘后两个数，积不变。

永宁字母表示为：（a × b ）× c ＝ a ×（ b × c ）4 、在乘法算式中，如果其中两个因数的积为整十、整百、整千数时，可以运用乘法交换律、乘法结合律来改变运算顺序，从而简化运算。

如：125 ×25 ×8 × 4＝125 ×8 ×25 ×4---------------------------- 乘法交换律＝（125 ×8 ）×（25 × 4 ）----------------- 乘法结合律＝1000 ×100＝1000004 、乘法交换律、乘法结合律的结合运用8 ×（30 ×125 ） 5 ×（63 ×2 ）25 ×（26 ×4 ）（25 ×125 ）×8 × 4 78 ×125 ×8 ×3 25 ×125 ×8 × 4125 ×19 ×8 ×3 （125 ×12 ）×8 （25 ×3 ）×412 ×125 ×5 ×85 、运用乘法交换律、乘法结合律简化运算的实质与算式特点实质：把其中相乘结果为整十、整百、整千的两个因数先相乘。

乘法结合律练习题四年级下一、选择题1. 下列哪个选项正确地使用了乘法结合律？A. 3 × 4 + 5 = 3 × (4 + 5)B. (3 × 4) × 5 = 3 × 4 × 5C. 3 × (4 + 5) = 3 × 4 + 3 × 5D. 3 × 4 × 5 = 4 × 3 × 52. 根据乘法结合律，下列哪个等式是正确的？A. 6 × 7 × 8 = 6 × (7 + 8)B. 6 × (7 × 8) = 6 × 8 × 7C. 6 × 7 × 8 = 7 × 6 × 8D. 6 × 7 × 8 = 8 × 7 × 63. 乘法结合律不适用于以下哪个选项？A. 2 × 3 × 4B. 2 × (3 × 4)C. 2 + 3 × 4D. (2 × 3) × 44. 如果 a, b, c 是任意数，下列哪个等式正确地应用了乘法结合律？A. a × b + c = a × (b + c)B. a × (b × c) = (a × b) × cC. a + b × c = a × b + cD. a × b × c ≠ (a × b) × c二、填空题5. 根据乘法结合律，我们可以将(2 × 5) × 3 改写为 ________。

6. 如果我们有数字 4, 6 和 9，使用乘法结合律，我们可以将 4 ×6 × 9 改写为 ________。

8 × 125 × 8 =25 × 73 × 4 =25 × 84 × 4 =86 × 25 × 4 =88 × 25 × 4 =17 × 25 × 4 =25 × 47 × 4 =38 × 25 × 4 =25 × 25 × 4 =125 × 5 × 8 =42 × 25 × 4 =8000 ÷ 8 ÷ 125 =3000 ÷ 25 ÷ 4 =14 × 25 × 4 =25 × 91 × 4 =6700 ÷ 25 ÷ 4 =96 × 25 × 4 =25 × 87 × 4 =125 × 2 × 8 =125 × 15 × 8 =16000 ÷ 8 ÷ 125 =13000 ÷ 25 ÷ 4 =25 × 6 × 4 =13000 ÷ 8 ÷ 125 =5 × 125 × 8 =25 × 66 × 4 =2000 ÷ 25 ÷ 4 =12000 ÷ 125 ÷ 8 =800 ÷ 25 ÷ 4 =14 × 125 × 8 =7 × 125 × 8 =25 × 26 × 4 =62 × 25 × 4 =1000 ÷ 8 ÷ 125 =125 × 8 × 8 =30 × 25 × 4 =25 × 22 × 4 =125 × 18 × 8 =10000 ÷ 8 ÷ 125 =5600 ÷ 25 ÷ 4 =52 × 25 × 4 =76 × 25 × 4 =10000 ÷ 4 ÷ 25 =18 × 25 × 4 =15000 ÷ 8 ÷ 125 =练习范围：乘法交换律和结合律 题数：100月 日姓名: 分秒成绩:25 × 59 × 4 =7800 ÷ 25 ÷ 4 =6000 ÷ 125 ÷ 8 = 18 × 125 × 8 =15 × 125 × 8 =7000 ÷ 125 ÷ 8 = 125 × 16 × 8 =1000 ÷ 125 ÷ 8 =7000 ÷ 25 ÷ 4 = 20000 ÷ 4 ÷ 25 =19000 ÷ 8 ÷ 125 =25 × 40 × 4 =25 × 75 × 4 =13 × 125 × 8 =11000 ÷ 8 ÷ 125 = 34 × 25 × 4 =10000 ÷ 125 ÷ 8 =20000 ÷ 125 ÷ 8 = 17000 ÷ 125 ÷ 8 =19 × 125 × 8 =7000 ÷ 8 ÷ 125 = 25 × 12 × 4 =10 × 125 × 8 =12000 ÷ 4 ÷ 25 = 2000 ÷ 125 ÷ 8 =20000 ÷ 25 ÷ 4 = 3 × 125 × 8 =28 × 25 × 4 =10000 ÷ 25 ÷ 4 =3000 ÷ 125 ÷ 8 = 85 × 25 × 4 =25 × 60 × 4 =6600 ÷ 25 ÷ 4 = 24 × 25 × 4 =18000 ÷ 125 ÷ 8 =26 × 25 × 4 =20 × 125 × 8 = 6 × 125 × 8 =125 × 6 × 8 =74 × 25 × 4 =25 × 48 × 4 =20000 ÷ 8 ÷ 125 = 125 × 10 × 8 =19000 ÷ 125 ÷ 8 =25 × 98 × 4 = 125 × 17 × 8 =5900 ÷ 25 ÷ 4 =8000 ÷ 4 ÷ 25 = 125 × 13 × 8 = 4 × 125 × 8 =125 × 3 × 8 =12 × 25 × 4 =16 × 125 × 8 =3000 ÷ 4 ÷ 25 = 5500 ÷ 25 ÷ 4 =25 × 33 × 4 =13000 ÷ 125 ÷ 8 =25 × 79 × 4 =18 × 25 × 4 =20000 ÷ 125 ÷ 8 =34 × 25 × 4 =94 × 25 × 4 =13 × 25 × 4 =20 × 25 × 4 =14 × 25 × 4 =8000 ÷ 125 ÷ 8 =125 × 6 × 8 =16 × 125 × 8 =25 × 58 × 4 =12000 ÷ 4 ÷ 25 =12 × 125 × 8 =8000 ÷ 8 ÷ 125 =125 × 16 × 8 =11000 ÷ 8 ÷ 125 =1000 ÷ 8 ÷ 125 =8200 ÷ 25 ÷ 4 =5 × 25 × 4 =10000 ÷ 25 ÷ 4 =18000 ÷ 125 ÷ 8 =13 × 125 × 8 =125 × 2 × 8 = 3 × 25 × 4 =800 ÷ 25 ÷ 4 =62 × 25 × 4 =10000 ÷ 4 ÷ 25 =5000 ÷ 4 ÷ 25 =67 × 25 × 4 =20 × 125 × 8 =7000 ÷ 25 ÷ 4 =2900 ÷ 25 ÷ 4 =6000 ÷ 125 ÷ 8 =4000 ÷ 125 ÷ 8 =25 × 49 × 4 =6300 ÷ 25 ÷ 4 =24 × 25 × 4 =125 × 18 × 8 =2000 ÷ 8 ÷ 125 =2 × 125 × 8 =96 × 25 × 4 =11000 ÷ 25 ÷ 4 =练习范围：乘法交换律和结合律 题数：100月日姓名: 分秒成绩:8 × 125 × 8 =16000 ÷ 8 ÷ 125 =17 × 25 × 4 = 13000 ÷ 8 ÷ 125 =6700 ÷ 25 ÷ 4 = 4 × 125 × 8 = 11000 ÷ 4 ÷ 25 =4000 ÷ 25 ÷ 4 =125 × 19 × 8 = 3000 ÷ 125 ÷ 8 =9600 ÷ 25 ÷ 4 = 3 × 125 × 8 = 3000 ÷ 25 ÷ 4 =25 × 34 × 4 =25 × 98 × 4 =52 × 25 × 4 =25 × 59 × 4 =4000 ÷ 8 ÷ 125 = 15000 ÷ 4 ÷ 25 =25 × 43 × 4 =1700 ÷ 25 ÷ 4 = 1000 ÷ 4 ÷ 25 =25 × 60 × 4 =18 × 125 × 8 = 56 × 25 × 4 =7100 ÷ 25 ÷ 4 =19000 ÷ 125 ÷ 8 = 2000 ÷ 4 ÷ 25 =6000 ÷ 4 ÷ 25 =1600 ÷ 25 ÷ 4 = 11 × 25 × 4 =8400 ÷ 25 ÷ 4 =25 × 73 × 4 = 7000 ÷ 125 ÷ 8 =7000 ÷ 4 ÷ 25 = 6 × 25 × 4 = 9100 ÷ 25 ÷ 4 =19000 ÷ 4 ÷ 25 =17 × 125 × 8 = 9000 ÷ 125 ÷ 8 =19 × 125 × 8 =25 × 5 × 4 =25 × 12 × 4 =20000 ÷ 4 ÷ 25 =125 × 5 × 8 = 10000 ÷ 8 ÷ 125 =54 × 25 × 4 =25 × 91 × 4 = 14000 ÷ 4 ÷ 25 =125 × 4 × 8 =25 × 92 × 4 =25 × 26 × 4 = 4 × 25 × 4 =16000 ÷ 125 ÷ 8 = 15 × 25 × 4 =10 × 125 × 8 =28 × 25 × 4 =6500 ÷ 25 ÷ 4 =10000 ÷ 25 ÷ 4 =17000 ÷ 4 ÷ 25 =15 × 125 × 8 =12000 ÷ 125 ÷ 8 =125 × 16 × 8 =125 × 20 × 8 =14000 ÷ 25 ÷ 4 =8200 ÷ 25 ÷ 4 =16 × 125 × 8 =200 ÷ 25 ÷ 4 =125 × 14 × 8 =25 × 48 × 4 =9 × 125 × 8 =125 × 6 × 8 =25 × 36 × 4 =125 × 5 × 8 =125 × 18 × 8 =25 × 79 × 4 =25 × 60 × 4 =125 × 4 × 8 =25 × 32 × 4 =3000 ÷ 4 ÷ 25 =25 × 61 × 4 =125 × 7 × 8 =74 × 25 × 4 =125 × 19 × 8 =8000 ÷ 8 ÷ 125 =72 × 25 × 4 =800 ÷ 25 ÷ 4 =8 × 25 × 4 =19 × 125 × 8 =25 × 59 × 4 =125 × 9 × 8 =3000 ÷ 25 ÷ 4 = 5 × 125 × 8 = 2 × 125 × 8 =6 × 125 × 8 =25 × 92 × 4 = 4 × 125 × 8 =1900 ÷ 25 ÷ 4 =6000 ÷ 125 ÷ 8 =13000 ÷ 4 ÷ 25 =练习范围：乘法交换律和结合律 题数：100月日姓名: 分秒成绩:125 × 10 × 8 =2000 ÷ 4 ÷ 25 =17 × 25 × 4 = 15000 ÷ 125 ÷ 8 =15000 ÷ 4 ÷ 25 =17 × 125 × 8 = 7000 ÷ 25 ÷ 4 =10000 ÷ 8 ÷ 125 =25 × 40 × 4 =20 × 125 × 8 =8000 ÷ 4 ÷ 25 =125 × 13 × 8 = 18 × 25 × 4 =18 × 125 × 8 =4000 ÷ 125 ÷ 8 = 4000 ÷ 25 ÷ 4 =1000 ÷ 8 ÷ 125 =7300 ÷ 25 ÷ 4 = 1000 ÷ 125 ÷ 8 =12000 ÷ 8 ÷ 125 =19000 ÷ 125 ÷ 8 = 77 × 25 × 4 =67 × 25 × 4 =7000 ÷ 8 ÷ 125 = 5000 ÷ 125 ÷ 8 =25 × 39 × 4 =6000 ÷ 8 ÷ 125 = 125 × 12 × 8 =15000 ÷ 8 ÷ 125 =25 × 58 × 4 = 16000 ÷ 8 ÷ 125 =20000 ÷ 4 ÷ 25 =25 × 43 × 4 = 7000 ÷ 125 ÷ 8 =25 × 89 × 4 =25 × 99 × 4 =12 × 25 × 4 =25 × 26 × 4 =5100 ÷ 25 ÷ 4 = 5900 ÷ 25 ÷ 4 =25 × 52 × 4 =19000 ÷ 8 ÷ 125 = 25 × 17 × 4 =24 × 25 × 4 =18000 ÷ 125 ÷ 8 = 25 × 16 × 4 =2400 ÷ 25 ÷ 4 =16000 ÷ 125 ÷ 8 = 6000 ÷ 4 ÷ 25 =12 × 125 × 8 =25 × 73 × 4 =25 × 66 × 4 =3000 ÷ 125 ÷ 8 =25 × 34 × 4 =3 × 125 × 8 =13000 ÷ 8 ÷ 125 =25 × 79 × 4 =25 × 23 × 4 =125 × 5 × 8 =8000 ÷ 4 ÷ 25 =40 × 25 × 4 =17 × 25 × 4 =5000 ÷ 125 ÷ 8 =25 × 48 × 4 =125 × 16 × 8 =25 × 43 × 4 =25 × 59 × 4 =19000 ÷ 125 ÷ 8 =6000 ÷ 4 ÷ 25 =25 × 52 × 4 =87 × 25 × 4 =125 × 19 × 8 =25 × 19 × 4 =2000 ÷ 25 ÷ 4 =7000 ÷ 125 ÷ 8 =17000 ÷ 8 ÷ 125 =17000 ÷ 25 ÷ 4 =51 × 25 × 4 =9000 ÷ 125 ÷ 8 =5600 ÷ 25 ÷ 4 =12 × 25 × 4 =8 × 125 × 8 =25 × 40 × 4 =9300 ÷ 25 ÷ 4 =8200 ÷ 25 ÷ 4 =10000 ÷ 8 ÷ 125 =38 × 25 × 4 =3000 ÷ 25 ÷ 4 =5 × 25 × 4 =14 × 125 × 8 =125 × 9 × 8 =25 × 26 × 4 =19000 ÷ 4 ÷ 25 =12 × 125 × 8 =16000 ÷ 4 ÷ 25 =5000 ÷ 25 ÷ 4 =25 × 73 × 4 =17000 ÷ 4 ÷ 25 =18000 ÷ 125 ÷ 8 =800 ÷ 25 ÷ 4 =练习范围：乘法交换律和结合律 题数：100月日姓名: 分秒成绩:125 × 4 × 8 =2800 ÷ 25 ÷ 4 =7000 ÷ 25 ÷ 4 = 19000 ÷ 8 ÷ 125 =26 × 25 × 4 =3000 ÷ 125 ÷ 8 = 25 × 27 × 4 =84 × 25 × 4 =12000 ÷ 125 ÷ 8 = 25 × 58 × 4 =4500 ÷ 25 ÷ 4 =3600 ÷ 25 ÷ 4 = 11000 ÷ 25 ÷ 4 =20 × 125 × 8 =77 × 25 × 4 =46 × 25 × 4 =13000 ÷ 125 ÷ 8 =18 × 25 × 4 = 10000 ÷ 4 ÷ 25 =9500 ÷ 25 ÷ 4 =24 × 25 × 4 = 125 × 12 × 8 =15000 ÷ 8 ÷ 125 =15 × 125 × 8 = 13 × 125 × 8 =4000 ÷ 25 ÷ 4 =74 × 25 × 4 =25 × 34 × 4 =5900 ÷ 25 ÷ 4 =125 × 20 × 8 = 17 × 125 × 8 =11000 ÷ 8 ÷ 125 =8 × 25 × 4 = 15000 ÷ 125 ÷ 8 =8000 ÷ 125 ÷ 8 =18 × 125 × 8 = 25 × 70 × 4 =8600 ÷ 25 ÷ 4 = 4 × 125 × 8 = 10000 ÷ 25 ÷ 4 =6400 ÷ 25 ÷ 4 =25 × 45 × 4 =96 × 25 × 4 =72 × 25 × 4 =9 × 25 × 4 =42 × 25 × 4 =19000 ÷ 25 ÷ 4 =16000 ÷ 125 ÷ 8 = 25 × 5 × 4 =7800 ÷ 25 ÷ 4 =25 × 91 × 4 = 3000 ÷ 4 ÷ 25 =125 × 2 × 8 =71 × 25 × 4 = 7000 ÷ 4 ÷ 25 =3000 ÷ 125 ÷ 8 =25 × 33 × 4 =14000 ÷ 125 ÷ 8 =7000 ÷ 4 ÷ 25 =2000 ÷ 8 ÷ 125 =6200 ÷ 25 ÷ 4 =25 × 75 × 4 =2600 ÷ 25 ÷ 4 =25 × 44 × 4 =125 × 18 × 8 =25 × 48 × 4 =12 × 25 × 4 =2000 ÷ 125 ÷ 8 =8800 ÷ 25 ÷ 4 =13 × 125 × 8 =85 × 25 × 4 =7000 ÷ 125 ÷ 8 =18000 ÷ 8 ÷ 125 =87 × 25 × 4 =62 × 25 × 4 =19000 ÷ 125 ÷ 8 =6700 ÷ 25 ÷ 4 =25 × 58 × 4 =3900 ÷ 25 ÷ 4 =96 × 25 × 4 =19 × 125 × 8 =8000 ÷ 125 ÷ 8 =12000 ÷ 125 ÷ 8 =74 × 25 × 4 =13000 ÷ 4 ÷ 25 =19000 ÷ 4 ÷ 25 =1000 ÷ 8 ÷ 125 = 4 × 125 × 8 =8 × 25 × 4 =7500 ÷ 25 ÷ 4 =7000 ÷ 8 ÷ 125 =25 × 92 × 4 =42 × 25 × 4 =12 × 125 × 8 =12000 ÷ 8 ÷ 125 = 6 × 125 × 8 =125 × 8 × 8 =125 × 20 × 8 =7 × 125 × 8 =25 × 32 × 4 =练习范围：乘法交换律和结合律 题数：100月日姓名: 分秒成绩:5000 ÷ 25 ÷ 4 =58 × 25 × 4 =4000 ÷ 125 ÷ 8 = 10 × 125 × 8 =11000 ÷ 125 ÷ 8 =25 × 12 × 4 = 6000 ÷ 125 ÷ 8 =11000 ÷ 8 ÷ 125 =25 × 13 × 4 = 7000 ÷ 25 ÷ 4 =25 × 49 × 4 =125 × 11 × 8 = 14 × 25 × 4 =17000 ÷ 125 ÷ 8 =25 × 35 × 4 = 8200 ÷ 25 ÷ 4 =17000 ÷ 8 ÷ 125 =20 × 125 × 8 = 11 × 125 × 8 =6000 ÷ 4 ÷ 25 =25 × 2 × 4 =125 × 7 × 8 =125 × 4 × 8 =10000 ÷ 8 ÷ 125 = 125 × 9 × 8 =16 × 125 × 8 =32 × 25 × 4 = 5000 ÷ 125 ÷ 8 =25 × 28 × 4 =8000 ÷ 8 ÷ 125 = 54 × 25 × 4 =6100 ÷ 25 ÷ 4 =125 × 12 × 8 = 77 × 25 × 4 =29 × 25 × 4 =25 × 66 × 4 =66 × 25 × 4 =25 × 76 × 4 =25 × 5 × 4 =15 × 125 × 8 =78 × 25 × 4 =10000 ÷ 25 ÷ 4 = 1000 ÷ 4 ÷ 25 =52 × 25 × 4 =25 × 60 × 4 =17 × 25 × 4 =14000 ÷ 8 ÷ 125 =18000 ÷ 125 ÷ 8 = 6400 ÷ 25 ÷ 4 =11000 ÷ 4 ÷ 25 =8000 ÷ 4 ÷ 25 = 1000 ÷ 125 ÷ 8 =2000 ÷ 4 ÷ 25 =3000 ÷ 4 ÷ 25 = 125 × 5 × 8 =1000 ÷ 125 ÷ 8 =18000 ÷ 125 ÷ 8 =24 × 25 × 4 =6 × 125 × 8 =125 × 13 × 8 = 3 × 25 × 4 =6000 ÷ 8 ÷ 125 =18000 ÷ 8 ÷ 125 =25 × 59 × 4 =80 × 25 × 4 =18 × 25 × 4 = 4 × 125 × 8 =12000 ÷ 125 ÷ 8 =17 × 125 × 8 =1000 ÷ 4 ÷ 25 =67 × 25 × 4 =64 × 25 × 4 =25 × 34 × 4 =46 × 25 × 4 =5600 ÷ 25 ÷ 4 = 5 × 25 × 4 =25 × 4 × 4 =16000 ÷ 125 ÷ 8 =125 × 9 × 8 =25 × 73 × 4 =11000 ÷ 4 ÷ 25 =65 × 25 × 4 =25 × 49 × 4 =125 × 6 × 8 =16000 ÷ 8 ÷ 125 =7000 ÷ 4 ÷ 25 =19 × 125 × 8 =25 × 12 × 4 =5000 ÷ 125 ÷ 8 =8000 ÷ 125 ÷ 8 =17000 ÷ 8 ÷ 125 =3000 ÷ 125 ÷ 8 =12 × 25 × 4 =125 × 4 × 8 =88 × 25 × 4 =92 × 25 × 4 =10000 ÷ 25 ÷ 4 =87 × 25 × 4 =2600 ÷ 25 ÷ 4 =125 × 2 × 8 =练习范围：乘法交换律和结合律 题数：100月日姓名: 分秒成绩:25 × 66 × 4 =34 × 25 × 4 =23 × 25 × 4 = 85 × 25 × 4 =1000 ÷ 8 ÷ 125 =28 × 25 × 4 = 5000 ÷ 8 ÷ 125 =25 × 43 × 4 =125 × 7 × 8 = 20000 ÷ 25 ÷ 4 =13000 ÷ 8 ÷ 125 =8000 ÷ 4 ÷ 25 = 16 × 125 × 8 = 3 × 125 × 8 =1000 ÷ 25 ÷ 4 = 19000 ÷ 125 ÷ 8 =54 × 25 × 4 =125 × 15 × 8 = 25 × 40 × 4 =18000 ÷ 4 ÷ 25 =2500 ÷ 25 ÷ 4 = 9 × 125 × 8 =7000 ÷ 8 ÷ 125 =12 × 125 × 8 = 91 × 25 × 4 =16000 ÷ 4 ÷ 25 =125 × 19 × 8 = 12000 ÷ 4 ÷ 25 =3900 ÷ 25 ÷ 4 =3000 ÷ 25 ÷ 4 = 6400 ÷ 25 ÷ 4 =62 × 25 × 4 =8 × 125 × 8 = 25 × 92 × 4 =20000 ÷ 4 ÷ 25 =25 × 79 × 4 = 25 × 38 × 4 =3000 ÷ 4 ÷ 25 =7000 ÷ 25 ÷ 4 = 7000 ÷ 125 ÷ 8 =25 × 91 × 4 =4300 ÷ 25 ÷ 4 = 10000 ÷ 4 ÷ 25 =99 × 25 × 4 =9000 ÷ 125 ÷ 8 = 17 × 25 × 4 =19000 ÷ 4 ÷ 25 =25 × 27 × 4 = 6700 ÷ 25 ÷ 4 =14000 ÷ 125 ÷ 8 =125 × 11 × 8 = 25 × 48 × 4 =25 × 58 × 4 =14000 ÷ 4 ÷ 25 = 70 × 25 × 4 =125 × 18 × 8 =24 × 25 × 4 =25 × 72 × 4 =18000 ÷ 125 ÷ 8 =125 × 2 × 8 =9 × 125 × 8 =27 × 25 × 4 =5000 ÷ 125 ÷ 8 =5400 ÷ 25 ÷ 4 =6000 ÷ 125 ÷ 8 =25 × 59 × 4 =54 × 25 × 4 =125 × 16 × 8 =3400 ÷ 25 ÷ 4 =16 × 125 × 8 =25 × 79 × 4 =125 × 19 × 8 =42 × 25 × 4 =125 × 8 × 8 =8 × 25 × 4 =25 × 40 × 4 =6000 ÷ 4 ÷ 25 =3000 ÷ 4 ÷ 25 = 3 × 25 × 4 =13000 ÷ 8 ÷ 125 =25 × 36 × 4 =16000 ÷ 8 ÷ 125 =12 × 125 × 8 =4000 ÷ 125 ÷ 8 =17000 ÷ 125 ÷ 8 =12000 ÷ 4 ÷ 25 = 5 × 25 × 4 =6400 ÷ 25 ÷ 4 =3 × 125 × 8 =73 × 25 × 4 =800 ÷ 25 ÷ 4 =41 × 25 × 4 = 5 × 125 × 8 =48 × 25 × 4 =3000 ÷ 125 ÷ 8 =9000 ÷ 125 ÷ 8 =25 × 43 × 4 =15000 ÷ 8 ÷ 125 =68 × 25 × 4 =13 × 125 × 8 =练习范围：乘法交换律和结合律 题数：100月日姓名: 分秒成绩:10000 ÷ 125 ÷ 8 =6000 ÷ 8 ÷ 125 =47 × 25 × 4 =25 × 71 × 4 =1000 ÷ 25 ÷ 4 =25 × 48 × 4 =34 × 25 × 4 =9500 ÷ 25 ÷ 4 =19 × 125 × 8 = 17 × 25 × 4 =10000 ÷ 25 ÷ 4 =8000 ÷ 4 ÷ 25 = 125 × 15 × 8 =10000 ÷ 4 ÷ 25 =67 × 25 × 4 = 125 × 5 × 8 =25 × 74 × 4 =125 × 10 × 8 = 15000 ÷ 125 ÷ 8 =125 × 13 × 8 =11 × 125 × 8 = 25 × 34 × 4 =16 × 25 × 4 =25 × 60 × 4 = 125 × 7 × 8 =19000 ÷ 125 ÷ 8 =8300 ÷ 25 ÷ 4 = 8200 ÷ 25 ÷ 4 =8 × 125 × 8 =12 × 25 × 4 = 3000 ÷ 25 ÷ 4 =17000 ÷ 8 ÷ 125 =14000 ÷ 8 ÷ 125 = 125 × 17 × 8 =6700 ÷ 25 ÷ 4 =84 × 25 × 4 =25 × 80 × 4 =10000 ÷ 8 ÷ 125 =12000 ÷ 8 ÷ 125 = 25 × 75 × 4 =62 × 25 × 4 =9000 ÷ 8 ÷ 125 = 87 × 25 × 4 =125 × 6 × 8 =77 × 25 × 4 =25 × 26 × 4 =25 × 13 × 4 = 6 × 125 × 8 =25 × 92 × 4 =46 × 25 × 4 =7900 ÷ 25 ÷ 4 = 85 × 25 × 4 =125 × 9 × 8 =1000 ÷ 8 ÷ 125 = 25 × 98 × 4 =5 × 125 × 8 =7000 ÷ 25 ÷ 4 =9000 ÷ 25 ÷ 4 =9000 ÷ 125 ÷ 8 =2000 ÷ 8 ÷ 125 =74 × 25 × 4 =6400 ÷ 25 ÷ 4 =20000 ÷ 125 ÷ 8 =25 × 66 × 4 =13 × 125 × 8 =51 × 25 × 4 =19000 ÷ 4 ÷ 25 =12 × 125 × 8 =25 × 74 × 4 =6000 ÷ 4 ÷ 25 =5000 ÷ 8 ÷ 125 =5600 ÷ 25 ÷ 4 =62 × 25 × 4 =25 × 26 × 4 =125 × 3 × 8 =25 × 60 × 4 =25 × 73 × 4 =46 × 25 × 4 =25 × 40 × 4 =25 × 37 × 4 =5000 ÷ 125 ÷8 =25 × 35 × 4 =4000 ÷ 8 ÷ 125 =6000 ÷ 125 ÷ 8 =17 × 125 × 8 =16000 ÷ 125 ÷ 8 =10000 ÷ 8 ÷ 125 =34 × 25 × 4 =5800 ÷ 25 ÷ 4 =15 × 125 × 8 =25 × 34 × 4 =24 × 25 × 4 =6700 ÷ 25 ÷ 4 =125 × 16 × 8 =8 × 25 × 4 =15000 ÷ 125 ÷ 8 =25 × 98 × 4 =77 × 25 × 4 =20 × 125 × 8 =4000 ÷ 125 ÷ 8 =练习范围：乘法交换律和结合律 题数：100月日姓名: 分秒成绩:18 × 125 × 8 =3000 ÷ 4 ÷ 25 =25 × 43 × 4 =25 × 91 × 4 =3000 ÷ 125 ÷ 8 =90 × 25 × 4 = 16000 ÷ 4 ÷ 25 =7000 ÷ 8 ÷ 125 =15000 ÷ 8 ÷ 125 = 18000 ÷ 125 ÷ 8 =2000 ÷ 4 ÷ 25 = 4 × 125 × 8 =87 × 25 × 4 =12000 ÷ 8 ÷ 125 =800 ÷ 25 ÷ 4 = 10000 ÷ 125 ÷ 8 =25 × 88 × 4 =19 × 125 × 8 = 16 × 25 × 4 =125 × 2 × 8 =125 × 14 × 8 = 6100 ÷ 25 ÷ 4 =96 × 25 × 4 =7000 ÷ 125 ÷ 8 = 25 × 75 × 4 =300 ÷ 25 ÷ 4 =11000 ÷ 4 ÷ 25 = 7800 ÷ 25 ÷ 4 =125 × 5 × 8 =55 × 25 × 4 =25 × 92 × 4 =25 × 6 × 4 =7 × 125 × 8 =18 × 25 × 4 =25 × 48 × 4 =125 × 7 × 8 =11 × 125 × 8 =1000 ÷ 4 ÷ 25 =125 × 17 × 8 = 85 × 25 × 4 =1000 ÷ 8 ÷ 125 =3300 ÷ 25 ÷ 4 = 25 × 12 × 4 =16000 ÷ 8 ÷ 125 =25 × 50 × 4 = 125 × 6 × 8 =125 × 10 × 8 =6000 ÷ 25 ÷ 4 = 38 × 25 × 4 =12000 ÷ 4 ÷ 25 =2000 ÷ 125 ÷ 8 = 6 × 125 × 8 =25 × 2 × 4 =2300 ÷ 25 ÷ 4 = 19000 ÷ 8 ÷ 125 =6000 ÷ 125 ÷ 8 =10 × 125 × 8 =1000 ÷ 4 ÷ 25 =96 × 25 × 4 =18 × 125 × 8 =27 × 25 × 4 =16000 ÷ 8 ÷ 125 =1100 ÷ 25 ÷ 4 =7000 ÷ 125 ÷ 8 =9000 ÷ 125 ÷ 8 =25 × 46 × 4 =25 × 40 × 4 =6000 ÷ 4 ÷ 25 =5600 ÷ 25 ÷ 4 =20000 ÷ 25 ÷ 4 =125 × 11 × 8 =25 × 53 × 4 =52 × 25 × 4 =83 × 25 × 4 =25 × 48 × 4 =125 × 15 × 8 =13 × 125 × 8 =100 ÷ 25 ÷ 4 =98 × 25 × 4 =7000 ÷ 25 ÷ 4 =18000 ÷ 125 ÷ 8 =25 × 24 × 4 =15000 ÷ 8 ÷ 125 =24 × 25 × 4 =1000 ÷ 125 ÷ 8 =25 × 59 × 4 =25 × 55 × 4 =15 × 125 × 8 =6400 ÷ 25 ÷ 4 =8 × 25 × 4 =54 × 25 × 4 =25 × 67 × 4 =16000 ÷ 4 ÷ 25 =25 × 91 × 4 =10000 ÷ 25 ÷ 4 =25 × 34 × 4 =2000 ÷ 125 ÷ 8 =125 × 9 × 8 =1000 ÷ 8 ÷ 125 =125 × 10 × 8 =练习范围：乘法交换律和结合律 题数：100月日姓名: 分秒成绩:3000 ÷ 4 ÷ 25 =34 × 25 × 4 =3400 ÷ 25 ÷ 4 = 25 × 61 × 4 =125 × 12 × 8 =25 × 66 × 4 = 19000 ÷ 125 ÷ 8 =3000 ÷ 125 ÷ 8 =4000 ÷ 8 ÷ 125 = 9200 ÷ 25 ÷ 4 =25 × 79 × 4 =7000 ÷ 8 ÷ 125 = 5000 ÷ 8 ÷ 125 =62 × 25 × 4 =16 × 125 × 8 = 14 × 25 × 4 =25 × 56 × 4 =5000 ÷ 4 ÷ 25 = 19000 ÷ 4 ÷ 25 =25 × 73 × 4 =7800 ÷ 25 ÷ 4 = 25 × 20 × 4 =25 × 76 × 4 = 6 × 125 × 8 = 7000 ÷ 4 ÷ 25 =85 × 25 × 4 =125 × 16 × 8 = 8 × 125 × 8 =9000 ÷ 4 ÷ 25 =25 × 75 × 4 =17 × 25 × 4 =125 × 19 × 8 = 5 × 125 × 8 =18 × 25 × 4 =11000 ÷ 125 ÷ 8 =25 × 58 × 4 = 125 × 4 × 8 =25 × 95 × 4 =25 × 81 × 4 = 10000 ÷ 4 ÷ 25 =12000 ÷ 4 ÷ 25 =25 × 60 × 4 = 17 × 125 × 8 =11000 ÷ 4 ÷ 25 =87 × 25 × 4 = 18000 ÷ 4 ÷ 25 =3000 ÷ 25 ÷ 4 =125 × 5 × 8 = 25 × 52 × 4 =8200 ÷ 25 ÷ 4 = 5 × 25 × 4 = 8000 ÷ 125 ÷ 8 =42 × 25 × 4 =600 ÷ 25 ÷ 4 = 14000 ÷ 4 ÷ 25 =19 × 125 × 8 =19000 ÷ 125 ÷ 8 =54 × 25 × 4 =125 × 16 × 8 =3000 ÷ 125 ÷ 8 =25 × 82 × 4 =125 × 10 × 8 =66 × 25 × 4 =34 × 25 × 4 =3700 ÷ 25 ÷ 4 =25 × 56 × 4 =15 × 125 × 8 =14 × 25 × 4 =6000 ÷ 8 ÷ 125 =125 × 19 × 8 =25 × 40 × 4 =13 × 125 × 8 =3900 ÷ 25 ÷ 4 =14000 ÷ 8 ÷ 125 =8700 ÷ 25 ÷ 4 =9000 ÷ 25 ÷ 4 =16000 ÷ 8 ÷ 125 =24 × 25 × 4 =2000 ÷ 4 ÷ 25 =1000 ÷ 125 ÷ 8 =25 × 92 × 4 =18000 ÷ 125 ÷ 8 =6600 ÷ 25 ÷ 4 =18000 ÷ 4 ÷ 25 =7800 ÷ 25 ÷ 4 =14000 ÷ 4 ÷ 25 =87 × 25 × 4 = 5 × 25 × 4 =15000 ÷ 8 ÷ 125 =25 × 43 × 4 =7700 ÷ 25 ÷ 4 =800 ÷ 25 ÷ 4 =5000 ÷ 125 ÷ 8 =46 × 25 × 4 =125 × 5 × 8 =7000 ÷ 25 ÷ 4 =13000 ÷ 8 ÷ 125 =25 × 98 × 4 =67 × 25 × 4 =125 × 15 × 8 =练习范围：乘法交换律和结合律 题数：100月日姓名: 分秒成绩:6700 ÷ 25 ÷ 4 =125 × 4 × 8 =39 × 25 × 4 =16 × 125 × 8 =125 × 3 × 8 =6000 ÷ 125 ÷ 8 = 1000 ÷ 4 ÷ 25 =125 × 12 × 8 =12 × 125 × 8 = 19000 ÷ 8 ÷ 125 =19000 ÷ 4 ÷ 25 =7000 ÷ 8 ÷ 125 = 25 × 66 × 4 =19 × 25 × 4 =12000 ÷ 125 ÷ 8 = 25 × 78 × 4 =8400 ÷ 25 ÷ 4 =5000 ÷ 8 ÷ 125 = 25 × 58 × 4 =4400 ÷ 25 ÷ 4 =17000 ÷ 4 ÷ 25 = 13000 ÷ 4 ÷ 25 =25 × 73 × 4 =7 × 125 × 8 = 9000 ÷ 125 ÷ 8 =4100 ÷ 25 ÷ 4 =10000 ÷ 25 ÷ 4 = 63 × 25 × 4 =96 × 25 × 4 =125 × 11 × 8 = 18 × 25 × 4 =125 × 8 × 8 =25 × 34 × 4 = 13000 ÷ 125 ÷ 8 =8000 ÷ 125 ÷ 8 =83 × 25 × 4 =29 × 25 × 4 =4300 ÷ 25 ÷ 4 =6000 ÷ 4 ÷ 25 = 8 × 125 × 8 =25 × 75 × 4 =25 × 59 × 4 =17 × 25 × 4 =20000 ÷ 8 ÷ 125 =6400 ÷ 25 ÷ 4 = 74 × 25 × 4 =25 × 49 × 4 =25 × 48 × 4 =3 × 125 × 8 =25 × 93 ×4 =7000 ÷ 4 ÷ 25 = 125 × 13 × 8 = 5 × 125 × 8 =200 ÷ 25 ÷ 4 = 125 × 2 × 8 =。

乘法结合律试卷篇一：小学四年级乘法结合律练习题四年级下册数学乘法结合律专项练习题姓名：1、我会填①400×______×8 = 400×(15×8)②(a×b)×c = a×(_____×_____)③35×______ = 46×_______ ④45×5×4 = 45×(______×_____) ⑤125×32×25 = (125×______)×(_____×_______)⑥a×b = _____×_____2、符合乘法交换律的画○符合结合律的画△①35×28=28×35 ( ) ②32×25=8×(4×25)( ) ③25×15×4×2=(15×2)×(25×4) ( ) ④ a×b×c=a×c×b ( )3、算一算，想一想，你有什么发现？(1)30×2×5= (2)25 ×16 ×4=4、连一连5、简算33×15×2125×32×255×(19×2)(25×125)×32(30(6×12)×56125×483530×(2×5)= (25 ×4)×16= 45×18 4×45×25 125×16 45+18+55 25×7×4×3 4×(25×9)4×45×25 ×25)×40 ×(12×5) (13×2×5 (60我发现：我发现：×8×2 ×(25×4) ×45 25×50×8 25×125×16 16×25×125 38×5×4 25×23×8 125×72 ×25)×4 15×(25×4) ×5)×20 5×(13×20) ×25)×4125×5×8 18+(55+45)125 45 18 (1564×125125×32 25×35×16125×24125×16 16×25 56×125 25×12836×2525×12 25×24×528×25六、解决问题。

一、填空。

1、两个数相乘，交换两个（因数）的位置，（积）不变，这叫做（乘法交换律）。

用字母表示为（a×b=b×a ）。

2、三个数相乘，先把（前两个数）相乘，或者先把（后两个数）相乘，（积）不变，这叫做（乘法交换律）。

用字母表示为（（a×b）×c=a×（b×c））。

3、在连乘算式中，如果某两个因数的积正好是整十、（整百）、（整千）……数，运用（乘法交换律）或（乘法结合律）先把这两个数相乘，再与其他数相乘，这样能使计算简便。

二、根据乘法运算定律，填上适当的数。

1、27 ×a= a ×272、25×9×2= 25 × 2 ×93、b×（15×27 ）=（b×15 ）×274、125×5×8×2=（125 ×8 ）×（ 5 × 2 ）三、计算下面各题，怎样简便就怎样算。

25×43×8 125×6×7×8=25×8×43 =125×8×（6×7）=200×43 =1000×42=8600 =42000四、小明每天从家去学校往返2次，他家到学校的距离是750m，他一个星期（按5天计算）一共要走多少米？750×4×5=15000（米）答：他一个星期一共要走15000米。

五、陈老师正在给一部书稿排版。

每行排20个字，每页可以排27行，正好排了50页。

这部书稿一共有多少个字？20×27×50=27×（20×50）=27000（个）答：这部书稿一共有27000个字。

六、简算。

6161×39-3939×61=61×101×39 -39×101×61=0。