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40➗125的竖式计算

125x198➗(18➗8)的简便运算 125x198➗(18➗8) =125x198➗(18/8) =125x198x8/18 =125x8x198/18 =1000x198/18 =1000x11 =11000

=125➗(5x5) =125➗25 =5

解:简便计算 2000➗125 =2x1000÷125 =2x(1000÷125) =2x8 =16 49500➗500 =495÷5 =99 祝天天向上。

600➗15+600➗5用简便方法计算 600➗15+600➗5 =40+120 =160 直接计算

17.5➗12.5✖️1.4 =175➗125✖️1.4 =25x7➗(25x5)x1.4 =7➗5x1.4 =1.2x1.4 =1.68

解:9000000➗25➗125➗8➗5➗4➗2 =9000000➗(25x125x8x5x4x2) =9000000➗(25x4x5x2x125x8) =9000000➗(100x10x1000) =9

每天售50000➗40=1250件盈利每天1.5万 40-(40x0.3)=28成本。 九折后是售价每件40*0.9=36元利润为28/36 (1-28➗36)x(?)—10万>1.5万。 (?)约为51.75万 517500➗36➗1250=11.5倍

3.38÷18=0.187(7上面点个点,表示7循环) 2.3÷99=0.023(23上面点个点,表示23循环) 47 ÷ 22 = 2.136(36上面点个点,表示36循环) 竖式见图:

(1)100➗125✖️100%=80% (2)125➗100✖️100%=125%

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