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1.25乘3.2乘0.8的简便算法

问: 1.25x3.2x0.8的简便运算 答: 1.25x3.2x0.8=1.25×0.8×3.2 =1×3.2 =3.2 答题完毕,谢谢采纳。

先用1.25*0.8=1这个都要背的,然后在乘3.2

如图

4.49÷1.25+3.31×0.8+2.2×0.8 =4.49÷5/4+3.31×0.8+2.2×0.8 =4.49×0.8+3.31×0.8+2.2×0.8 =(4.49+3.31+2.2)×0.8 =10×0.8 =8

4.7+1.25x5.3x0.8 =4.7+1.25x0.8x5.3 =4.7+1x5.3 =10

=8*3.2+2*3.2 =(8+2)*3.2 =10*3.2 =32

0.25X3.2x1.25 =(0.25×4)×(0.8×1.25) =1×1 =1

解: 1·25×3·2×0·8 =1.25×0.8×3.2 =1×3.2 =3.2 祝你学习进步,如有不明可以追问.同意我的答案请采纳,O(∩_∩)O谢谢

1.25×0.8×3.37 =1×3.37 =3.37

1.25 × 0.8 -------- 1.0 00

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