计算下面各题,能简便的要简便计算.×× (+)×27 ×6+×6+× ×× (+)×36××50 [4﹣(﹣)]×.
24÷= %=0.75= 成.
=0.8=16÷ = :5= %
0.6= ÷15= %==15: .
= :24=24: == %= (填小数)
1: ==25÷ = %=二成.