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计算下面各题 能简算的要简算.(1)512÷7÷57(2)813×17+613÷7(3)4×

2022-08-14 03:06:02 问答库 阅读 200 次

问题详情

计算下面各题,能简算的要简算.
(1)5

12

÷7÷5

7


(2)8

13

×1

7

+6

13

÷7
(3)4×5

12

÷5

9


(4)(0.8-2

5

)÷(2

9

+1

3

)
(5)2

3

÷(2

3

-1

6

)
(6)(7

12

+11

18

)÷5

36

参考答案

(1)512÷7÷57,
=512÷(7×57),
=512÷5,
=112;

(2)813×17+613÷7,
=(813+613)×17,
=1413×17,
=213;

(3)4×512÷59,
=4×(512×95),
=4×34,
=4;

(4)(0.8-25)÷(29+13),
=0.4÷59,
=1825;

(5)23÷(23-16),
=23÷12,
=113;

(6)(712+1118)÷536,
=712×365+1118×365,
=215+225,
=835.

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