四年级数学下册乘法交换律和结合律练习题汇编
四年级交换律结合律分配律试题
四年级交换律结合律分配律试题一、交换律、结合律、分配律知识点回顾1. 加法交换律定义:两个数相加,交换加数的位置,和不变。
用字母表示为a + b=b + a。
例如:3+5 = 5+3,结果都是8。
2. 加法结合律定义:三个数相加,先把前两个数相加,或者先把后两个数相加,和不变。
用字母表示为(a + b)+c=a+(b + c)。
例如:(2 + 3)+4=2+(3 + 4),(2+3)+4 = 5+4=9,2+(3 + 4)=2 + 7 = 9。
3. 乘法交换律定义:两个数相乘,交换因数的位置,积不变。
用字母表示为a× b = b× a。
例如:3×5=5×3 = 15。
4. 乘法结合律定义:三个数相乘,先把前两个数相乘,再和另外一个数相乘,或先把后两个数相乘,再和另外一个数相乘,积不变。
用字母表示为(a× b)× c=a×(b× c)。
例如:(2×3)×4=2×(3×4),(2×3)×4 = 6×4 = 24,2×(3×4)=2×12 = 24。
5. 乘法分配律定义:两个数的和与一个数相乘,可以先把它们分别与这个数相乘,再相加。
用字母表示为(a + b)× c=a× c + b× c。
例如:(2+3)×4=2×4+3×4,(2 + 3)×4=5×4 = 20,2×4+3×4 = 8+12 = 20。
二、试题及解析1. 加法交换律试题题目:计算45+32,并用加法交换律进行验算。
解析:首先计算45+32 = 77。
然后根据加法交换律a + b=b + a,交换45和32的位置,计算32+45,结果也是77,说明计算正确。
2. 加法结合律试题题目:计算23+(17+29)。
《乘法交换律和结合律》达标检测(1)新人教版四年级下册数学
1.《乘法交换律和结合律》达标检测1.口算。
35×4=14×5=16×5=15×6=18×5=25×8=15×4=2.根据运算定律在里填上适当的数。
25×52=52×29×4×25-29×(×)(25×37)×=37×(×4)125×(4×)=(125×)×93.先计算,再运用乘法交换律进行验算。
35×28 225×424.计算下面各题,怎样简便就怎样计算。
57×25×4 250×13×4 125×72 125×25×4×85.解决问题。
(1)买12包书,一共用多少钱?(2)小明每天在家和学校之间要走2个来回,他一个星期(按5天计算)往返学校,一共要走多少米?6.填一填。
(1)25×6××4=4200 (2)125××4×9=360002.《乘法交换律和结合律》达标检测1.口算。
15×6=35×4= 25×6=18×=125×8=15×8=55×2=14×5=2.根据乘法运算定律,在里填上适当的数。
(1)14×15=15×(2)125×9×8=××9(3)(12×25)×=12×(×4)(4)125×(4×)=(125×)×18(5)7×6×8×5=(7×6)×(×)3.下面的算式分别运用了什么运算定律?36×15=15×36 () 25×17×4=24×5×17 ()56×5×2=56×(5×2)()8×7×125=7×(8×125)()4.计算下面各题,并用乘法交换律验算。
人教版四年级 乘法交换律和结合律练习题
乘法交换律和结合律练习题一、仔细想,认真填1、两个数相加,交换加数的,和不变,这叫做。
用字母表示为。
2、三个数相加,先把相加,再与相加;或者先把相加,再与相加,它们的和不变,这叫做。
用字母表示为。
3、两个数相乘,交换乘数的,积不变,这叫做。
用字母表示为。
4、三个数相乘,先把相乘,再与相乘;或者先把相乘,再与相乘,它们的积不变,这叫做。
用字母表示为。
5、73+99+27=99+(73+27) 是根据加法( )律和( )律;9×125×8 =9×(125×8),这里运用了乘法( )律;(25×37)×4=37×(25×4)。
这里运用了乘法( )律和( )律。
6、在○里填>、<或=符号。
125×24○125×8×327×4×25○27×(4×25)67×8○68×77、在□内填上数,在○内填上运算符号,在横线上填上运用的运算定律。
29+37+171=37+(□○□)。
42×5×8=42×(□○□)。
47+□=28○□。
427+39+73=(427+□)○□。
35×21×2=21×(□○□) 。
8、计算64×26后,可以交换两个乘数的位置进行验算,是运用了()律。
9、25×(20×39)=(25×20)×39 这是运用了()律。
10、用简便方法计算76+98+24,要先算(),这是根据()律。
二、对号入座:(把正确的答案的序号填在括号里)1、下面一个零也不读的数是( )。
A.600030B.603000C.6003002、与480×40的积一样的算式是( )。
A.48×40B.480×400C.48×4003、用两个4和三个0可以组成( )个不同的五位数。
(完整)四年级运算定律练习题
运算定律练习题(1)乘法交换律:a×b=b×a 乘法结合律:(a×b)×c=a×(b×c)38×25×4 42×125×8 25×17×4 (25×125)×(8×4)49×4×538×125×8×3 (125×25)×4 5 ×289×2 (125×12)×8 125×(12×4)(2) 乘法交换律和结合律的变化练习125×64 125×88 44×25 125×24 25×28(3)加法交换律:a+b=b+a 加法结合律:(a+b)+c=a+(b+c)357+288+143 158+395+105 167+289+33 129+235+171+165 378+527+73 169+78+22 58+39+42+61 138+293+62+107(4)乘法分配律:(a+b)×c=a×c+b×c 正用练习(80+4)×25 (20+4)×25 (125+17)×8 25×(40+4)15×(20+3)(5)乘法分配律正用的变化练习:36×3 25×41 39×101 125×88 201×24 (6)乘法分配律反用的练习:34×72+34×28 35×37+65×37 85×82+85×1825×97+25×3 76×25+25×24(7)乘法分配律反用的变化练习:38×29+38 75×299+75 64×199+64 35×68+68+68×64☆思考题:(8)其他的一些简便运算。
新人教版四年级下册乘法交换律和结合律
(2)如果小明一家和姑姑一家总共4名孩子、6名 大人一起去玩,他们拿出300元买门票够吗? 应该怎样买?
读完题,同桌同 检学验互一相下说!一你说的知 答道案了合哪适些吗信?息。
分开购票:20×4+40×6=80+240=320(元) 够团体票:30×(4+6)=30×10=300(元) 300元<320元 答:他们应该买团体票,这样300元就够了。
六
单 的计算法则
元
:
小
数 小数加、减混
的 加
合运算的运算
法 顺序
和
减 法
小数加、减法
的简便运算
具体内容
(1)小数点要对齐,也就是相同数位要对齐; (2)得数的小数部分末尾有0,一般要把0去掉,给小
数化简。
与整数加、减混合运算的运算顺序相同。在没有括号的算式里, 如果只有加法和减法,就按照从左到右的顺序计算;算式里有 括号的,要先算括号里面的。
=(142+58)+(914+86) =200+1000 =1200
(2)35×125×8
=35×(125×8) =35×1000 =35000
(3)356-127-73
=356-(127+73) =356-200 =156
(4)75×101
=75×(100+1) =75×100+75×1 =7500+75 =7575
整数的运算定律在小数运算中同样适用。
二、基础练习
1. 在( )里填上适当的数或文字。 (1)3.46读作( 三点四)六,其中“3”在( )位个上,表示3个( ); 一
小数的近似数
要点提示
小数每相邻两个计数单位间的进率是10。 整数部分最小的计数单位是一,小数部分最大的计数单位是十分之一。
苏教版四年级数学下册 第3课时 乘法交换律和结合律及其简便运算 课课练习题
第3课时乘法交换律和结合律及其简便运算
1、填一填,并在应用了乘法交换律的式子后面画“☆”,应用了乘法结合律的式子后面“○”。
36×□=72×□()
8×19×5=19×(□×□)()
□×m=n×□()
2×(5×17)=(2×□)×□()
2、算一算,比一比。
43×2×5 43×(2×5)
8×21×5 21×(8×5)
3、你能很快说出每盆花上三个数连乘的积吗?把得数写在花盆上。
4、用简便方法计算下面各题。
13×4×5 17×25×4
35×21×2 6×18×5
5、
6、工地运来5车水泥,每车20袋,每袋50千克,一共运来多少千克水泥?
7、一个游泳池的泳道是50米,小明在这个游泳池中游了7个来回,他一共游了多少米?
教师的职务是‘千教万教,教人求真’;学生的职务是‘千学万学,学做真人’。
我们发现了儿童有创造力,认识了儿童有创造力,就须进一步把儿童的创造力解放出来。
——好词好句。
交换律、结合律和分配律的四年级计算题
交换律、结合律和分配律的四年级计算题介绍交换律、结合律和分配律是数学运算中常用的基本法则。
在四年级的研究中,学生需要掌握并运用这些法则来解决各种计算题。
交换律定义交换律是指在某些数学运算中,改变运算对象的顺序不会改变结果。
具体来说,对于加法和乘法运算,交换律的定义如下:- 加法交换律:a + b = b + a- 乘法交换律:a × b = b × a例子以下是一些具体的交换律的计算题例子:1. 3 + 2 = 2 + 32. 4 × 5 = 5 × 4结合律定义结合律是指在某些数学运算中,改变运算对象的分组方式不会改变结果。
具体来说,对于加法和乘法运算,结合律的定义如下:- 加法结合律:(a + b) + c = a + (b + c)- 乘法结合律:(a × b) × c = a × (b × c)例子以下是一些具体的结合律的计算题例子:1. (2 + 3) + 4 = 2 + (3 + 4)2. (4 × 5) × 2 = 4 × (5 × 2)分配律定义分配律是指在某些数学运算中,一个数与一组数的运算结果再与另一个数进行运算,与先将这个数与每个数分别运算后再进行运算得到的结果相同。
具体来说,对于加法和乘法运算,分配律的定义如下:- 加法分配律:a × (b + c) = (a × b) + (a × c)- 乘法分配律:a × (b + c) = (a × b) + (a × c)例子以下是一些具体的分配律的计算题例子:1. 2 × (3 + 4) = (2 × 3) + (2 × 4)2. 3 × (4 + 5) = (3 × 4) + (3 × 5)结论交换律、结合律和分配律是数学运算中的基本法则,对于四年级的学生来说是必须掌握和理解的概念。
小学四年级数学下册练习题乘法交换律和结合律(共400题)
月 日 姓名: 分 秒 班级:
58 25 4
19000 25 4
4800 25 4
2300 25 4
4600 25 4
1100 25 4
9000 8 125
700 25 4
25 79 4
4300 25 4
25 16 4
4100 25 4
25 33 4
11000 4 25
25 91 4
15000 8 125
4000 25 4
125 8 8
1700 25 4
39 25 4
700 25 4
25 19 4
900 25 4
10000 125 8
11000 125 8
93 25 4
25 53 4
4
小学四年级数学下册练习题 《乘法交换律和结合律》 题数:400题
25 76 4
2100 25 4
月 日 姓名: 分 秒 班级:
400 25 4
125 9 8
1400 25 4
2000 125 8
25 69 4
25 59 4
16000 25 4
125 19 8
73 25 4
25 2 4
25 17 4
25 96 4
24 25 4
45 25 4
25 6 4
4 125 8
68 25 4
25 78 4
8
小学四年级数学下册练习题 《乘法交换律和结合律》 题数:400题
84 25 4
125 14 8
月 日 姓名: 分 秒 班级:
25 55 4
10000 25 4
25 35 4
500 25 4
6000 25 4
四年级下口算题 (乘法交换律和结合律) 1000题
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 =。
乘法交换律和结合律练习题
乘法交换律和结合律练习题乘法交换律和结合律练习题在数学中,乘法交换律和结合律是基本的运算法则。
它们在解决实际问题和简化计算中起着重要的作用。
为了更好地理解和应用这两个法则,我们可以通过一些练习题来加深对它们的理解。
1. 练习题一:乘法交换律(a) 计算:3 × 4 × 5 = ?(b) 将乘法顺序改变后重新计算:4 × 5 × 3 = ?(c) 结果是否相同?为什么?解答:(a) 3 × 4 × 5 = 60(b) 4 × 5 × 3 = 60(c) 结果相同。
根据乘法交换律,乘法的顺序改变不会改变最终的结果。
2. 练习题二:结合律(a) 计算:(2 × 3) × 4 = ?(b) 将括号内的乘法顺序改变后重新计算:2 × (3 × 4) = ?(c) 结果是否相同?为什么?解答:(a) (2 × 3) × 4 = 24(b) 2 × (3 × 4) = 24(c) 结果相同。
根据结合律,无论括号内的乘法顺序如何改变,最终的结果都不会改变。
3. 练习题三:乘法交换律和结合律的综合运用(a) 计算:(5 × 2) × (3 × 4) = ?(b) 将乘法顺序和括号内的乘法顺序改变后重新计算:(4 × 3) × (2 × 5) = ?(c) 结果是否相同?为什么?解答:(a) (5 × 2) × (3 × 4) = 10 × 12 = 120(b) (4 × 3) × (2 × 5) = 12 × 10 = 120(c) 结果相同。
根据乘法交换律和结合律,乘法的顺序和括号内的乘法顺序的改变都不会改变最终的结果。
