Question

7.2÷0.24÷0.3筒便运算？

Answer 1

7.2÷0.24÷0.3
=7.2÷24/100÷3/10
=7.2
x10
0/24
x10/3
【用24约分】
=0.3
x100
x10/3
=300/3
=100

Answer 2

1.5×0.3+0.15×0.07
=1.5×0.3+（0.15×10）×（0.07÷10）
=1.5×0.3+1.5×0.007
=1.5×（0.3+0.007）
=1.5×0.307
=0.4605
再看看别人怎么说的。