九百零七万六千零三十写作 ,省略“万位”后面的尾数约是 .
÷4==0.25= :8.
=9÷ = :8== (填小数)
3: ==15÷ = ×= (小数).
5÷20==4: = :12= %= (填小数)
÷20=12: ==0.8= %.