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计算下面各题 怎样简便就怎样算.(1)(125+732)×8(2)194×20%+194×4

2022-08-14 02:51:20 问答库 阅读 200 次

问题详情

计算下面各题,怎样简便就怎样算.
(1)(125+7

32

)×8(2)19

4

×20%+19

4

×4

5

(3)25×32×125

(4)99×1

100

(5)[3

4

×(122-21-1)÷1

100

](6)1

27

÷4

5

×125

2

×4

5

×270.

参考答案

(1)(125+732)×8,
=125×8+732×8,
=1000+1.75,
=1001.75;

(2)194×20%+194×45,
=194×(20%+45),
=194×1,
=194;

(3)25×32×125,
=25×(4×8)×125,
=(25×4)×(8×125),
=100×1000,
=100000;

(4)99×1100,
=(100-1)×1100,
=100×1100-1×1100,
=1-1100,
=99100;

(5)34×(122-21-1)÷1100,
=34×100÷1100,
=75÷1100,
=7500;

(6)127÷45×1252×45×270,
=127×54×1252×45×270,
=125×5,
=625.

考点: