找位置.31×17 29×1963×36 36×6380×40 79×4110000 999942×60 59×42.
= ÷0.8=0.875= :24.
÷16== : = (填小数)
3÷ =6÷8= ÷12=51÷ = 填小数.
÷8=21÷ == : = (小数).
÷ ==3: = :24= (填小数)