问题 解答题
口算下面各题.
0.8+1.2=
0.25+0.75=1.8-0.8=1-0.68=
0.3×0.4=4÷0.5=0.027×100=5.7÷0.3=
0.61+0.06=0.5×2.4=5.5÷10=0.27-0.15=
答案

0.8+1.2=20.25+0.75=11.8-0.8=11-0.68=0.32
0.3×0.4=0.124÷0.5=80.027×100=2.75.7÷0.3=19
0.61+0.06=0.670.5×2.4=1.25.5÷10=0.550.27-0.15=0.12

单项选择题
单项选择题