4.9乘10.1 如何简算今天就要啊

问题描述:

4.9乘10.1 如何简算
今天就要啊

4.9*(10+0.1)=4.9*10+4.9*0.1=49+0.49=49.49

4.9×(10+0.1)
=49+0.49
=49.49

4.9*10.1
=4.9*(10+0.1)
=4.9*10+4.9*0.1
=49+0.49
=49.49