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计算下面各题 能简便的要简便计算.7×79+27×5959×25÷23(512+19-518

2022-08-14 02:32:12 问答库 阅读 200 次

问题详情

计算下面各题,能简便的要简便计算.
7×7

9

+2

7

×5

9

5

9

×2

5

÷2

3

(5

12

+1

9

-5

18

)×36

[1-(1

5

+2

3

)×4

13

]÷11

20

(1

8

+1

6

)÷5

24

-2

3

×1

4

40

13

×(26×3

40

)

参考答案

(1)7×79+27×59
=499+1063
=53863;

(2)59×25÷23
=29÷23
=13;

(3)(512+19-518)×36
=512×36+19×36-518×36
=15+4-10
=19-10
=9;

(4)[1-(15+23)×413]÷1120
=[1-1315×413]÷1120
=[1-415]÷1120
=1115÷1120
=113;

(5)(18+16)÷524-23×14
=724÷524-23×14
=75-16
=1730;

(6)4013×(26×340)
=4013×340×26
=313×26
=6.

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