4.05L=mL 8升=m3
15× = ÷ = 1+ = ×0=
× = 14×30%= 2- = ×3÷ =
① × ÷
② ×( +14)
③ - -
④ × + ÷9
⑤1- ÷
⑥ ×[ ÷( - )]