竖式计算(打※的要验算)(1)741÷3 (2)※603÷7 (3)33×42 (4)28×82 (5)3.7+4.9 (6)9.3﹣6.4.
3÷8═= ÷24= %= :56.
3:4= :8=9: == %
3÷ == :12=七成五= %
÷10==9: == :40.
18: = :20== ÷40=1.2.