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24.3%4.5+3.2x0.8怎么简算

可以3.2÷0.25x125x0.8=(3.2÷0.25)×(125×0.8)=12.6×100=1260

(3.2+0.56)÷0.8 =3.2÷0.8+0.56÷0.8 =4+0.7 =4.7 简便计算是一种特殊的计算,它运用了运算定律与数字的基本性质,从而使计算简便,使一个很复杂的式子变得很容易计算出得数。 在数的运算中,有加(+)、减(-)、乘(×)、除(÷)四种运算,我...

0.8X3.2X4 =3.2X3.2 =3.2X3+3.2X0.2 =9.6+0.64 =10.24

1.25x3.2x0.8 =1.25x0.8x3.2 =1x3.2 =3.2

=3.2÷0.8+0.12÷0.8 =4+0.15 =4.15 望采纳,谢谢

0.4×括号3.2-0.8括号÷1.2用简便算法计算 0.4x(3.2-0.8)÷1.2 =0.4x2.4÷1.2 =0.4x(2.4÷1.2) =0.4x2 =0.8

解:原式=1.25×0.8×0.32 =1×0.32 =0.32 望采纳

3.2×2.5 =(0.8×4)×2.5 =0.8×(4×2.5) =0.8×10 =8

=3.2/0.8+0.128/0.8=4+0.16=4.16

3.2×0.2+0.8 =0.8*【0.8+1】 =0.8*1.8 =1.44 满意采纳

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