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脱式计算(能简算的要简算). 1512-4512-3384.63+5811+5.64+131

2022-08-14 02:22:06 问答库 阅读 200 次

问题详情

脱式计算(能简算的要简算). 151

2

-45

12

-33

8

4.63+58

11

+5.64+13

11

95

7

-(21

13

+45

7

+11

13

)

18

11

-(7

11

+3

8

)
7

9

+3

10

-2

9

+17

10

15

11

-3

8

-5

8

参考答案


(1)1512-4512-338
=11112-338
=71724

(2)4.63+5811+5.64+1311
=(4.63+5.64)+(5811+1311),
=10.27+7,
=17.27;

(3)957-(2113+457+1113)
=(957-457)-(2113+1113)),
=5-21213
=2113

(4)1811-(711+38)
=1811-711-38
=1-38
=58

(5)79+310-29+1710
=(79-29)+(310+1710),
=59+2,
=259

(6)1511-38-58
=1511-(38+58)
=1511-1,
=411

考点: