1.2乘22.5加0.08乘22.5简便算法

1.2乘22.5加0.08乘22.5简便算法
2024-12-17 22:46:32
推荐回答(2个)
回答1:

1.2×22.5+0.08×22.5
=22.5×(1.2+0.08)
=22.5×1.28
=(9×2.5)×(0.4×3.2)
=(9×3.2)×(2.5×0.4)
=28.8×1
=28.8

回答2:

=22.5*(1.2+0.08)=22.5*1.28=22.5*(1+0.28)=22.5+6.3=28.8