完整版整数乘除法简便计算分类练习题带答案
温柔似野鬼°
884次浏览
2021年01月26日 00:22
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发现爱-
整数乘除法简便计算分类练习题
1
、凑整
25
×
32
×
125
=(25
×
4)
×
(8
×
125)
=100
×
1000
=100000
93 7
×
125
×
25
×
64
×
5
=937
×
(125
×
8)
×
(25
×< br>4)
×
(5
×
2)
=937
×
1000
×
100
×
10
=937000000
80
×
16
×
25
×
125
=(80
×
125)
×
(25
×
4)
×
4
=10000
×
100
×
4
=4000000
125
×
5
×
32
×
5
=( 125
×
8)
×
(5
×
2)
×
(5
×
2)
=1000
×
10
×
10
=100000
56
×
125
=7
×
(8
×
125)
=7
×
1000
1
/
9
=70002
、利用乘法分配律简算
46
×
101
=46
×
(100+1)
=46
×
100+46
×
1
=4600+46
=4646
17
×
999
=17
×
(1000
-
1)
=17000
-
17
=16983
125
×
98
=125
×
(100
-
2)
=12500
-
250
=12250
37
×
99
=37
×
(100
-
1)
=3700
-
37
=3663
234
×
102
=234
×
(100+2)
=23400+468
=23868(100
－
4)
×
25
2
/
9
=100
×
25
-
4
×
25
=2500
-
100
=2400
、逆用乘法分配律简算
395
×
29
＋
95
×
71=95
×
(71+29)
=95
×
100
=9500
25 35< br>×
25
＋＋
64
×
25=25
×
(64+3 5+1)
=25
×
100
=2500
235
＋
24
×
235123
×
235
－
=235
×
(123
-
24+1)
=235
×
100
=235
586
×
53 29
×
586
＋－
586
×
124=586
×
(124+29
-
53)
=586
×
100
=58600
38
×
38
＋
62
×
38
3
/
9
=38
×
(62+38)
=38
×
100
=38005 4
×
154
－
45
×
54
－
54
×
9=54
×
(154
-
45
-
9)
=54
×
100
=5400
67
×
12
＋
67
×
35
＋
67
×
5 2
＋
67=67
×
(12+35+52+1)
=67
×
100
=6700
4
、
利用商不变的性质简算
(
分子分母同时乘以相同的数、
商不变
)21 000
÷
125
=21000
×
8
÷
(125
×
8)=168000
÷
1000
=168
110
÷
5
=110
×
2
÷
(5
×
2)
=220
÷
10
=22
44000
÷
125
=44000
×
8
÷
(125
×
8)=352000
÷
1000
=352
47700
÷
900
=4770 0
÷
100
÷
(900
÷
100)=477
÷9
=53
4
/
9