四年级数学下册乘法运算定律练习题精选95Word下载.docx
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13×
113+87×
11341×
(30+5)602×
23
21×
111+189×
21(54+6)×
2518×
20×
5
三、计算下面各题,并应用乘法交换律进行验算。
89×
5734×
8344×
73
74×
98=98×
(4×
11)=(5×
(5×
5)=5×
(34+77)×
2=34×
____+77×
28×
9+68×
9=(28+____)×
29+12×
41=____〇(____〇____)
56×
(32+38)=____〇____〇____〇____
19×
39×
822×
603
75+13×
7538×
(60+3)904×
24
33+367×
96(22+4)×
2596×
4×
41×
4637×
5618×
67
23×
51=51×
(12×
9)=(5×
6×
(9×
5)=9×
(99+57)×
8=99×
____+57×
88×
20+55×
20=(88+____)×
10+15×
70=____〇(____〇____)
85×
(21+49)=____〇____〇____〇____
25×
25×
810×
403
49+15×
4974×
(40+3)902×
42×
172+128×
42(52+2)×
581×
125
84×
7066×
4624×
44
72×
23=23×
(2×
3)=(5×
(17×
5)=17×
(36+50)×
9=36×
____+50×
18+74×
18=(57+____)×
35+4×
35=____〇(____〇____)
(17+53)=____〇____〇____〇____
14×
6125×
33×
827×
104
51+43×
5145×
(60+3)902×
30
95×
38+362×
95(14+8)×
2520×
8321×
8167×
31
99×
94=94×
21)=(5×
(7×
5)=7×
(40+49)×
7=40×
____+49×
34×
19+28×
19=(34+____)×
11×
10+11×
50=____〇(____〇____)
68×
(47+43)=____〇____〇____〇____
35×
815×
604
78×
102+22×
10240×
(60+1)503×
11
175+325×
74(46+6)×
2527×
79×
2173×
6482×
93
32×
15=15×
(10×
7)=(5×
(15×
5)=15×
(92+94)×
8=92×
____+94×
55×
17+10×
17=(55+____)×
7×
38+7×
62=____〇(____〇____)
(11+79)=____〇____〇____〇____
8×
85×
627×
103
11+13×
1169×
(30+1)701×
16
65×
178+122×
65(46+2)×
541×
18×
25
8792×
3945×
56
40×
48=48×
(19×
5)=19×
(66+96)×
7=66×
____+96×
11+86×
11=(32+____)×
42+15×
28=____〇(____〇____)
(31+29)=____〇____〇____〇____
8125×
813×
102
103+85×
10374×
(20+4)103×
26
73×
168+232×
73(2+8)×
555×
26×
7489×
8629×
94
49×
82=82×
(46+56)×
9=46×
____+56×
29×
19+85×
19=(29+____)×
10+20×
90=____〇(____〇____)
22×
(46+14)=____〇____〇____〇____
9×
65×
228×
304
60×
89+40×
8914×
(30+4)203×
91+209×
21(26+4)×
2580×
97×
1023×
5392×
49
64×
65=65×
(6×
5)=(5×
(41+53)×
7=41×
____+53×
2+96×
2=(35+____)×
15+20×
45=____〇(____〇____)
(28+62)=____〇____〇____〇____
31×
221×
404
41+67×
4148×
(50+1)504×
14
92×
34+266×
92(8+8)×
579×
16×
3071×
1645×
92
54=54×
13)=(5×
(3×
5)=3×
(12+19)×
7=12×
____+19×
14+40×
14=(21+____)×
44+10×
26=____〇(____〇____)
71×
(43+47)=____〇____〇____〇____
4125×
421×
602
66×
56+34×
5644×
(20+4)603×
15
189+211×
39(54+8)×
514×
69×
4572×
4843×
34
75×
87=87×
15)=(5×
(58+92)×
8=58×
____+92×
13+40×
13=(75+____)×
30+9×
60=____〇(____〇____)
(49+11)=____〇____〇____〇____
225×
621×
804
40+85×
4014×
(30+4)703×
106+394×
56(32+4)×
594×