1.9÷0.51.9
7.2÷67.2÷0.6
3.08÷13.08
3.24÷0.23.24×0.2
0.652÷3.80.652
7.42÷1.37.42.
①除→加→乘 算式:;
②加→除→乘 算式:.
0.4÷4×2.5=
8.8﹣0.8×2=
0.74÷7.4=
0.7×1.1=
6.25÷0.25=
18.7×0÷4=
1.5÷0.5=
9.4﹣5.4﹣0.5=.