问题 口算题
直接写得数。
0.9×5=6.4÷0.8=1-0.09=1÷5=0.4×0.25=
3.4+6.6=0.32÷0.4=0.72÷0.9=7.7÷0.07=2×0.05=
答案

0.9×5=4.56.4÷0.8=81-0.09=0.911÷5=0.20.4×0.25=0.1

3.4+6.6=100.32÷0.4=0.80.72÷0.9=0.87.7÷0.07=1102×0.05=0.1

单项选择题
单项选择题