Question

7.2×8.12+0.72×8.8简便方法？

Answer 1

简算如下，7.2×8.12+0.72×8.8=0.72×10×8.12+0.72×8.8=0.72×(81.2+8.8)=0.72×90=7.2×9=64.8

Answer 2

7.2×8.12+0.72×8.8

=7.2×8.12+7.2×0.88

=7.2×(8.12+0.88)

=7.2×9

=64.8
以上仅供参考，希望能帮到你

Answer 3

这道题可利用乘法分配率来简算
7.2*8.12+0.72*8.8
=7.2*8.12+7.2*0.88
=7.2*(8.12+0.88)
=7.2*9
=64.8

Answer 4

简便算法如下，原式=7.2×8.12+7.2×0.88=7.2×（8.12+0.88）=7.2×9=64.8

Answer 5

简便算法就是把7.2看作0.72*10=7.2来计算化简。
解:原式=0.72*(81.2+8.8)=0.72*90=64.8。