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能简算的要用简便方法计算(1)3-616-716 (2)712+112+512 (3)151

2022-08-14 00:39:06 问答库 阅读 200 次

问题详情

能简算的要用简便方法计算
(1)3-6

16

-7

16


(2)7

12

+1

12

+5

12


(3)15

16

-(1

5

+1

16

)
(4)1

7

+1

4

+6

7

+2

4


(5)21

13

-(8

13

+1

10

)
(6)2

3

-1

9

-2

9

参考答案

(1)3-616-716
=3-(616+716
=3-1316
=2316

(2)712+112+512
=712+512+112
=1+112
=1112

(3)1516-(15+116
=1516-116-15
=78-15
=2740

(4)17+14+67+24
=(17+67)+(14+24
=1+34
=134

(5)2113-(813+110
=2113-813-110
=1-110
=910

(6)23-19-29
=23-(19+29),
=23-13
=13

考点:方法