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能简算就要简算.①58×1110+38÷1011②1.25×7×0.8③7.28-3.14+

2022-08-14 02:40:56 问答库 阅读 200 次

问题详情

能简算就要简算.
①5

8

×11

10

+3

8

÷10

11

②1.25×7×0.8③7.28-3.14+1.72-2.86

④11

8

÷[9

10

-(2

5

+1

4

)]⑤(1

12

+1

9

-3

18

)×36⑥1

2

+1

4

+1

8

+1

16

+1

32

参考答案

①58×1110+38÷1011
=58×1110+38×1110,
=(58+38)×1110,
=1×1110,
=1110;

②1.25×7×0.8
=1.25×0.8×7,
=1×7,
=7;

③7.28-3.14+1.72-2.86
=7.28+1.72-(3.14+2.86),
=9-6,
=3;

④118÷[910-(25+14)]
=118÷[910-1320],
=118÷14,
=112;

⑤(112+19-318)×36
=112×36+19×36-318×36,
=3+4-6,
=1;

⑥12+14+18+116+132
=1632+832+432+232+132,
=3132.

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