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6.25X1.6-2.7 简便计算

6.25X1.6-2.7 简便计算=2.5x2.5x0.4x4-2.7=1x10-2.7=7.3

解:采用拆分法和结合律,原式=6.25*4.35*1.6=6.25x0.4x4.35x4=2.5x4x4.35=10x4.35=43.5

6.25x4.6x1.6=6.25x4.6x8x0.2=6.25x8x0.2x4.6=50x0.2x4.6=10x4.6=46谢谢,请采纳

6.25*2.7=16.875 竖式如下图:

3.2x6.8+ 6.25=3.2(10-3.2)+6.25=32-3.2*3.2+6.25=38.25-4*1.6=38.25-4*2.56=38.25-10.24=28.01

5/8=0.625 原式=0.652x5.6+0.625x3.4+1.6=0.625x(5.6+3.4)+1.6=6.25+1.6=7.85

6.25乘3.2=2.5*2.5*4*4*0.2=10*10*0.2=20

3.75x1.6+62.5x0.16=3.75x1.6+6.25x1.6=(3.75+6.25)x1.6=10x1.6=16

3.75*1.6+6.25*0.16=(3.75+0.625)x1.6=4.375 x8x0.2=35x0.2=7

您好:3.7*125%+1.25x2.7+5/4*3.6 =3.7*1.25+1.25x2.7+1.25*3.6=1.25x(3.7+2.7+3.6)=1.25x10=12.5 如果本题有什么不明白可以追问,如果满意请点击右下角“采纳为满意回答” 如果有其他问题请采纳本题后,另外发并点击我的头像向我求助,答题不易,请谅解,谢谢.o(∩_∩)o,记得好评及采纳,互相帮助 祝学习进步!

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