A-A+

脱式计算 其中①-③小题要简算.①2417-524-1924②38×25+35÷8×3③40

2022-08-14 02:36:45 问答库 阅读 200 次

问题详情

脱式计算,其中①-③小题要简算.
①24

17

-5

24

-19

24

②3

8

×2

5

+3

5

÷8×3③40×(2-5

8

-2

5

-3

4

)

④(7

6

-5

9

)÷11

8

⑤8

9

÷[(2

5

+1

10

)×4

3

]⑥[5

6

-(5

12

+3

8

)]÷3

4

参考答案

(1)2417-524-1924,
=2417-(524+1924),
=2417-1,
=717;

(2)38×25+35÷8×3,
=38×(25+35),
=38×1,
=38;

(3)40×(2-58-25-34),
=40×2-40×58-40×25-40×34,
=80-25-16-30,
=55-16-30,
=39-30,
=9;

(4)(76-59)÷118,
=1118÷118,
=49;

(5)89÷[(25+110)×43],
=89÷[12×43],
=89÷23,
=113;

(6)[56-(512+38)]÷34,
=[56-124]÷34,
=1924÷34,
=1118.

考点: