4.5乘以9.8的简便算法是什么

2024-12-21 05:48:43
推荐回答(2个)
回答1:

4.5乘以9.8
=4.5*(10-0.2)
=45-4.5*0.2
=45-0.9
=44.1

回答2:

4.5x9.8
=4.5x(10-0.2)
=4.5x10-4.5x0.2
=45-0.9
=44.1