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怎样简便怎样算3÷37-37÷3   (13-16+14)×12  1120÷[12×(23

2022-08-14 02:56:18 问答库 阅读 200 次

问题详情

怎样简便怎样算
3÷3

7

-3

7

÷3   
(1

3

-1

6

+1

4

)×12  
11

20

÷[1

2

×(2

3

+4

5

)]
0.625×(8.3-2.5×12%) 
6.8×2.5+2.5×3.2  
7

4

×5

8

+1

4

÷8

5

参考答案

(1)3÷37-37÷3,
=3×73-37×13,
=7-17,
=667;
(2)(13-16+14)×12,
=13×12-16×12+14×12,
=4-2+3,
=5;
(3)1120÷[12×(23+45)],
=1120÷[12×23+12×45],
=1120÷[13+25],
=1120×1511,
=34;
(4)0.625×(8.3-2.5×12%),
=0.625×(8.3-0.3),
=58×8,
=5;
(5)6.8×2.5+2.5×3.2,
=(6.8+3.2)×2.5,
=10×2.5,
=25;
(6)74×58+14÷85
=74×58+14×58,
=(74+14)×58,
=84×58,
=54,
=114.

考点: