问题 解答题
口算
0.56÷0.7=4.8×0.1=0.16÷1.6=0.28×0.4=0.9÷0.1=
3.2÷80=27.9÷30=3.4÷1.7=1.5+0.15=0.2×0.5÷0.2×0.5=
答案

0.56÷0.7=0.8,4.8×0.1=0.48,0.16÷1.6=0.1,0.28×0.4=0.112,0.9÷0.1=9,
3.2÷80=0.04,27.9÷30=0.93,3.4÷1.7=2,1.5+0.15=1.65,0.2×0.5÷0.2×0.5=0.25.

单项选择题
单项选择题