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计算下面各题(能简算的要简算) ①0.25×37+14+62÷4 ②(34+56-1112)

2022-08-14 02:32:33 问答库 阅读 200 次

问题详情

计算下面各题(能简算的要简算)
①0.25×37+1

4

+62÷4
②(3

4

+5

6

-11

12

)÷12
③1.21×42-(4.46+7

50

)
④3.5÷[1.4×(0.1-0.05)

参考答案

①0.25×37+14+62÷4,
=14×37+14×1+62×14,
=(37+1+62)×14,
=100×14,
=25;

②(34+56-1112)÷12,
=(1912-1112)÷12,
=812÷12,
=118;

③1.21×42-(4.46+750),
=1.21×42-4.6,
=50.82-4.6,
=46.22;

④3.5÷[1.4×(0.1-0.05)],
=3.5÷[1.4×0.05],
=3.5÷0.07,
=50.

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