www.rtmj.net > 32.4x0.9的简便方法

32.4x0.9的简便方法

32.4*0.9+3.24=3.24*9+3.24=3.24*(9+1)=3.24*10=32.4

32.4*0.9+0.1*32.4=32.4*(0.9+0.1)=32.4*1=32.4

原式=4.59(1-0.9)=4.59x0.1=0.459

7.32-7.32x0.9=7.32*(1-0.9)=7.32*0.1=0.732; 请采纳 如果你认可我的回答,敬请及时采纳,~如果你认可我的回答,请及时点击【采纳为满意回答】按钮 ~~手机提问的朋友在客户端右上角评价点【满意】即可.~你的采纳是我前进的动力 ~~O(∩_∩)O,记得好评和采纳,互相帮助

20.3x0.9的简便方法=20.3*1-20.3*0.1=20.3-2.03=18.27

3.2X0.9的简便计算方法?用乘法分配律使计算简便:3.2*0.9=3.2*(1-0.1)=3.2*1-3.2*0.1=3.2-0.32=2.88

324*0.9+32.4=32.4*9+32.4=32.4*(1+9)=32.4*10=324

4.32-4.32x0.9; =4.32x1-4.32x0.9; =4.32x(1-0.9); =4.32x0.1; =0.432

78.5-78.5*0.9 =(1-0.9)*78.5 =0.1*78.5 =7.85

4.54*0.9用简便方法计算如下:4.54*0.9=4.54*(1-0.1)=4.54*1-4.54*0.1=4.54-0.454=4.086

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