A-A+

(1)(225×3.75÷157)+(13+23÷229÷3)(2)(1-12+13-14+

2022-08-14 02:47:33 问答库 阅读 200 次

问题详情

(1)(22

5

×3.75÷15

7

)+(1

3

+2

3

÷22

9

÷3)
(2)(1-1

2

+1

3

-1

4

+1

5

)×(4

15

×12

5

÷4

15

)
(3)(3.6×1

20

-24÷200)÷11

5

+11

4

×0.2
(4)21

2

+0.039÷[1

20

×(2.31÷0.077)]-0.526.

参考答案

(1)(225×3.75÷157)+(13+23÷229÷3)
=(225×154×712)+(13+23×920×13)
=958+(13+110)
=958+1330
=107120;

(2)(1-12+13-14+15)×(415×125÷415)
=(1-3060+2060-1560+1260)×(415×75×154)
=4760×415×75×154
=129300;

(3)(3.6×120-24÷200)÷115+114×0.2
=(3.6×0.05-24÷200)÷1.2+3.75×0.2
=(0.18-0.12)÷1.2+0.75
=0.06÷1.2+0.75
=0.05+0.75
=0.8;

(4)212+0.039÷[120×(2.31÷0.077)]-0.526
=2.5+0.039÷[0.05×30]-0.526
=2.5+0.039÷1.5-0.526
=2.5+0.026-0.526
=2.

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