填上>或<.750÷31 20;520÷53 630÷62.
在括号里填上合适的数. 3÷8=9÷ === (填小数)
= :16=12: = ÷ = 填小数.
=15÷ = :50=.
1.5: =0.75=75÷ = :36=.
:12=5÷4== %= (填小数).