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计算(能简便的要简便)40÷[(34-13)×3]85×0.75+15×75%910÷[25

2022-08-14 02:58:16 问答库 阅读 200 次

问题详情

计算(能简便的要简便)
40÷[(3

4

-1

3

)×3]
85×0.75+15×75%
9

10

÷[2

5

+(1-10

11

)]
7.85-1.89-2.11+2.15
[1-(1

2

+1

6

)]÷1

3


24×(1

4

+1

8

-1

6

)

参考答案

(1)40÷[(34-13)×3]
=40÷[512×3],
=40÷54,
=32;

(2)85×0.75+15×75%
=85×0.75+15×0.75,
=(85+15)×0.75,
=100×0.75,
=75;

(3)910÷[25+(1-1011)]
=910÷[25+111],
=910÷2755,
=116;

(4)7.85-1.89-2.11+2.15
=7.85+2.15-(1.89+2.11),
=10-4,
=6;

(5)[1-(12+16)]÷13
=[1-23]÷13,
=13÷13,
=1;

(6)24×(14+18-16)
=24×14+24×18-24×16,
=6+3-4,
=5.

考点: