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4.8%4.8X0.5的简便计算.

4.8-4.8X0.5 =4.8x(1-0.5) =4.8x0.5 =2.4 祝天天向上。

4.8-4.8*0.5=4.8*(1-0.5)=4.8*0.5=2.4

计算 4.8-4.8x0.5 =4.8x(1-0.5) =4.8x0.5 =2.4

4.8-0.23/(0.5x2) =4.8-0.23/1 =4.8-0.23 =4.57 如有帮助请采纳, 如对本题有疑问可追问,Good luck!

第一个,(8+0.8)×1.25=8×1.25+0.8×1.25=11

5.5×(9.8+1)

望采纳谢谢。(1)2.5*32*0.125 =(2.5*4)*(8*0.125) =10*1 =10 (2)3.5-7+6.5 =3.5+6.5-7 =3 (3)1.2×2.5+0.8×2.5 =2.5(1.2+0.8) =25 (4)8.9×1.25-0.9×1.25 =1.25(8.9-0.9) =10 (5)12.5×7.4×0.8 =12.5×0.8×7.4 =74 (6)6.5×9.5+6.5×0...

0.56*202=0.56*200+0.56*2=112+1.12=113.12 4.8*0.125=0.6*8*0.125=0.6*1=0.6 4.6*1.9+5.4*1.9=1.9*(4.6+5.4)=1.9*10=19 6.5*12.8+6.5*238=6.5*(12.8+238)=6.5*(12+238+0.8)=6.5*250+6.5*0.8=65*25+5.2=1625+5.2=1630.2

4.8X7.8+7.8X0.52 =7.8X(4.8+0.52) =7.8X5.32 =10X5.32-2X5.32-0.2X5.32 =53.2-10.64-1.064 =53.2-11.704 =53.2-12+0.296 =41.2+0.296 =41.496

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