2.16÷0.27×0.126.44÷2.8-0.476.15÷0.125÷0.818.952÷4.12+5.4我知道有一种东西叫做：计算器,但是这个题目是这样的,计算下面各题,能简算的要简算,但是计算器要不知道谁要简算,谁不简算,我天生很笨

Question

2.16÷0.27×0.12 6.44÷2.8-0.47 6.15÷0.125÷0.8 18.952÷4.12+5.4
我知道有一种东西叫做：计算器,但是这个题目是这样的,计算下面各题,能简算的要简算,但是计算器要不知道谁要简算,谁不简算,我天生很笨的!对不起,实在不行,就算了!

Answer 1

2.16÷0.27×0.12
=216÷27×0.12
=216÷3÷6×0.12
=72÷6×0.12
=12×0.12
=1.44
6.44÷2.8-0.47
=6.44÷2÷2÷0.7-0.47
=3.22÷2÷0.7-0.47
=1.61÷0.7-0.47
=2.3-0.47
=1.83
6.15÷0.125÷0.8
=6.15÷（0.125×0.8）
=6.15÷0.1
=61.5
18.952÷4.12+5.4
=1895.2÷412+5.4
=1895.2÷2÷2÷206+5.4
=947.6÷2÷103+5.4
=473.8÷103+5.4
=4.6+5.4
=10