读出下面各数90087654388 读作: 1001001001 读作: 89988998006 读作: 558800000 读作: 8960069800 读作: .
1.75=7÷ = =28÷ = .
: =2= ÷10= %
= ÷ === 0.41 (填小数)
:16= .
3÷ =75%= :24= (填小数).