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下面各题怎样算简便就怎样算.(1)36×27×572×42(2)(78+716)÷716(3

2022-08-14 02:45:42 问答库 阅读 200 次

问题详情

下面各题怎样算简便就怎样算.
(1)36×2

7

×5

72

×42(2)(7

8

+7

16

)÷7

16

(3)6

7

×3

4

+1

4

×6

7

(4)7

8

÷2

3

÷7

8

  (5)5

9

×8÷7

9

(6)24×(1

3

+3

8

+7

12

).

参考答案

(1)36×27×572×42
=(36×572)×(27×42)
=52×12
=30;
(2)(78+716)÷716
=78×167+716×167
=2+1
=3;
(3)67×34+14×67
=67×(34+14)
=67×1
=67;
(4)78÷23÷78
=78÷78÷23
=1÷23
=112;
(5)59×8÷79
=409÷79
=407
=557;
(6)24×(13+38+712)
=24×13+24×38+24×712
=8+9+14
=31.

考点: