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计算下面各题 简算的要简算:6×(1-14)+0.75×52537+18×37+19×631

2022-08-14 02:33:59 问答库 阅读 200 次

问题详情

计算下面各题,简算的要简算:
6×(1-1

4

)+0.75×52

5

37+18×37+19×631÷28×91-73×1

28

-17÷28

[4.8-0.24÷(5-4.76)]÷3.8(1-2

3

)÷[2

3

÷6÷(1+3

5

)].

参考答案

(1)6×(1-14)+0.75×525,
=6×34+0.75×525,
=6×34+34×275,
=(6+275)×34,
=575×34,
=17120;

(2)37+18×37+19×63,
=(1+18)×37+19×63,
=19×37+19×63,
=19×(37+63),
=19×100,
=1900;

(3)1÷28×91-73×128-17÷28,
=128×91-73×128-17×128,
=128×(91-73-17),
=128×1,
=128;

(4)[4.8-0.24÷(5-4.76)]÷3.8,
=[4.8-0.24÷0.24]÷3.8,
=[4.8-1]÷3.8,
=3.8÷3.8,
=1;

(5)(1-23)÷[23÷6÷(1+35)],
=13÷[23÷6÷85],
=13÷[19×58],
=13÷572,
=245.

考点: