横线里最大能填几90× <365 90× <460 80× <47350× <240 15× <125 25× <18039× <280 28× <145 40× <375.
0.6==12÷ = :10= %= 成.
28÷ ==2.1:2.7= :63= 0. (填循环小数)
=l8: = :20== ÷40= (填小数)
3:8=18÷ ═ %= .小数.
÷8===15÷ = ÷32= (填小数)