7.2÷1.6+0.4用简便方法计算
7.2÷1.6+0.4
=0.4×(18÷4+1)
=0.4×5.5
=2.4
希望能够帮的上你,望采纳。
7.2÷1.6+0.4用简便方法计算:解:原式=4.5+0.4=4.9
(8-0.8)÷1.6+0.4=8÷1.6-0.8÷1.6+0.4=5-0.5+0.4=4.9