一堆硬币共13枚,1分硬币与5分硬币总面值是33分,则1分硬币有 枚,5分硬币有 枚.
= ÷10=.
2=== ÷ .
× =+ = ÷= :5= ×0.35=1.
9: == ÷32=.
= ÷ = %= (小数)= : .