里最大能填几.. ×5<41 +6<24 450× <950 54÷ >20 15× <91 ﹣18>50.
1.5: =0.75=75÷ = :36=.
:12=5÷4== %= (填小数).
3÷4=9: == 填分数= (填小写)
9: =0.75==21÷ = :4.
5÷8= : = = %.