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计算 能简算的要简算. 6.12+37+2.88+472924-(524-49)715+71

2022-08-14 02:46:17 问答库 阅读 200 次

问题详情

计算,能简算的要简算. 6.12+3

7

+2.88+4

7

29

24

-(5

24

-4

9

)

7

15

+7

12

+8

15

-7

12

15

11

-3

8

-5

8

5

6

+7

9

+3

8

5

8

-2

5

+1

4

14

15

-(2

3

-1

5

)

19

20

+(4

5

-7

40

).

参考答案

(1)6.12+37+2.88+47,
=(6.12+2.88)+(37+47),
=9+1,
=10;

(2)2924-(524-49),
=2924-524+49,
=1+49,
=149;

(3)715+712+815-712,
=(715+815)+(712-712),
=1+0,
=1;

(4)1511-38-58,
=1511-(38+58),
=1511-1,
=411;

(5)56+79+38,
=6072+5672+2772,
=14372;

(6)58-25+14,
=2540-1640+1040,
=1940;

(7)1415-(23-15),
=1415-715,
=715;

(8)1920+(45-740),
=1920-2540,
=1340.

考点: