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O.25x14.8竖式计算

0.25*4.8*0.5=0.25X4X0.6X0.5=1X0.3=0.3

原式=0.25x4x7.36=1x7.36=7.36供参考.

o.25x3.88x4怎么用简便方计算o.25x3.88x4=3.88(0.25*4)=3.88*1=3.88

25x39+25 =25x(39+1) =25x40 =1000

=0.25*4*9.67=1*9.67=9.67

25*99=2475

原式=(300+4)*15 =300*15+4*15 =4500+60 =4560 304 * 15 -------- 1520 304 ---------- 4560

14.8*38.2=565.36; 14.8 * 38.2 . 296 1184 444 . 565.36 48*0.352=16.896; 0.352 * 48 . 2816 1408 16.896 35.6*5.06≈180.1; 35.6 * 5.06 . 2136 1780 180.136 6.728*3.2≈21.53. 6.728 * 3.2 . 13456 20184 21.5296

0.25x1.25x320=0.25X1.25X4X8X10=(0.25X4)X(1.25X8)X10=1X10X10=100

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