0.6 0.02m3
+ = 1- = + =
- = - = - =
4-=
8-()=
9.6+4=
31.5+9.5=
2.4×0.5=
3.2×0.3÷3.2×0.3=
1.5×30=
7.6-0.21=
1.6÷0.25=
7.8-3.2-2.8=
电视机的价格最贵,电风扇价格比书桌贵。