苏教版四年级数学下册乘法运算定律练习题精选34Word文档格式.docx
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78+51×
7871×
(10+1)901×
29
81×
190+310×
81(52+4)×
539×
12×
125
三、计算下面各题,并应用乘法交换律进行验算。
30×
9896×
1856×
74
13=13×
(14×
13)=(5×
18×
(3×
5)=3×
(96+92)×
3=96×
____+92×
54×
15+38×
15=(54+____)×
10+7×
50=____〇(____〇____)
37×
(14+46)=____〇____〇____〇____
14×
15×
225×
211×
102
85×
101+15×
10110×
(50+4)202×
24
172+328×
81(24+6)×
565×
5
55×
7799×
5267×
85
96×
59=59×
(10×
21)=(5×
8×
(17×
5)=17×
(21+37)×
7=21×
____+37×
45×
15+17×
15=(45+____)×
20×
42+20×
38=____〇(____〇____)
84×
(37+43)=____〇____〇____〇____
10×
65×
25×
629×
202
44×
49+56×
4974×
(30+2)302×
12
24×
105+395×
24(32+8)×
2522×
9225×
2825×
32
75×
19=19×
(16×
7)=(5×
6×
(19+92)×
8=19×
67×
20+40×
20=(67+____)×
13×
19+13×
41=____〇(____〇____)
16×
(47+33)=____〇____〇____〇____
35×
425×
39×
216×
501
108+16×
10814×
(10+3)604×
27
46×
81+419×
46(48+2)×
595×
53×
1713×
4912×
62
21×
70=70×
(2×
(5×
5)=5×
(64+61)×
3=64×
____+61×
66×
15+45×
15=(66+____)×
39+13×
51=____〇(____〇____)
83×
230×
502
44+61×
4429×
(30+3)702×
19
179+121×
96(6+6)×
592×
17×
7283×
1939×
69
11×
67=67×
(6×
(73+25)×
5=73×
____+25×
58×
9+45×
9=(58+____)×
45+15×
45=____〇(____〇____)
(11+59)=____〇____〇____〇____
625×
616×
703
63+25×
6353×
(60+3)101×
23
87+313×
81(52+8)×
542×
25
80×
4849×
7329×
14=14×
(7×
5)=7×
(55+79)×
7=55×
____+79×
16+84×
16=(13+____)×
11+5×
89=____〇(____〇____)
86×
8125×
33×
825×
302
29×
78+71×
7831×
(30+2)402×
51×
172+228×
51(58+2)×
2582×
9325×
7482×
94
22=22×
(18×
(13×
5)=13×
(10+13)×
8=10×
____+13×
63×
9+68×
9=(63+____)×
27+18×
43=____〇(____〇____)
(12+58)=____〇____〇____〇____
45×
9×
821×
28×
28+72×
2821×
(50+1)304×
14
80(50+4)×
2580×
99×
5238×
6559×
88
3)=(5×
(21×
5)=21×
(73+20)×
7=73×
____+20×
8+62×
8=(66+____)×
19×
16+19×
44=____〇(____〇____)
(35+65)=____〇____〇____〇____
628×
62×
23+38×
2337×
(50+5)201×
16
44+256×
46(32+2)×
581×
74×
1172×
1744×
66
65=65×
(79+91)×
9=79×
____+91×
52×
17+38×
17=(52+____)×
3×
41+3×
29=____〇(____〇____)
(39+31)=____〇____〇____〇____
822×
304
18+19×
1817×
(40+2)301×
139+261×
20(12+6)×
2551×
4770×
2460×
40
91×
85=85×
5)=(5×
(15×
5)=15×
(78+11)×
8=78×
____+11×
11+68×
11=(83+____)×
48+17×
32=____〇(____〇____)
56×
(25+65)=____〇____〇____〇____
4125×
224×
116+72×
11677×
(20+1)601×
115×
53+247×
115(54+8)×
2557×