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计算:(1)20523-2.73-8.27+1713(2)59×7512+19×1712×5

2022-08-14 02:41:59 问答库 阅读 200 次

问题详情

计算:
(1)205

23

-2.73-8.27+17

13


(2)5

9

×75

12

+1

9

×17

12

×5
(3)[(88+8

9

)×1.125-54]÷23%
(4)[24

9

÷(32

5

-11

15

)×11

11

]÷4.02.

参考答案

(1)20523-2.73-8.27+1713,
=(20523+1713)-(2.73+8.27),
=21226299-11,
=10226299;
(2)59×7512+19×1712×5,
=59×7512+59×1712,
=(7512+1712)×59,
=9×59,
=5;
(3)[(88+89)×1.125-54]÷23%,
=[(88+89)×118-54]÷23%,
=[(88×98+89×98)-54]÷23%,
=[99+1-54]÷0.23,
=46÷0.23,
=200;
(4)[249÷(325-1115)×1111]÷4.02,
=[229÷223×1111]÷4.02,
=[229×38×1211]÷4.02,
=1÷4.02,
=100÷402,
=50201.

考点: