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计算下面各题 能简便的一定要简便.2-(14+17)×411149÷23-59÷2334×7

2022-08-14 02:40:06 问答库 阅读 200 次

问题详情

计算下面各题,能简便的一定要简便.
2-(1

4

+1

7

)×4

11

14

9

÷2

3

-5

9

÷2

3

3

4

×72.8+724

5

÷4(3

8

+1

27

)×16+11

27

24×(1

4

+1

6

-1

3

)[8

15

-(2

3

-7

15

)]×15

14

参考答案

(1)2-(14+17)×411,
=2-1128×411,
=2-17,
=167;

(2)149÷23-59÷23,
=149×32-59×32,
=(149-59)×32,
=1×32,
=32;

(3)34×72.8+7245÷4,
=34×72.8+72.8×14,
=72.8×(34+14),
=72.8×1,
=72.8;

(4)(38+127)×16+1127,
=38×16+127×16+1127,
=6+1627+1127,
=6+(1627+1127),
=6+1,
=7;

(5)24×(14+16-13),
=24×14+24×16-24×13,
=6+4-8,
=2;

(6)[815-(23-715)]×1514,
=[(815-23+715)]×1514,
=[815+715-23]×1514,
=13×1514,
=514.

考点: