把两个算式合并成一个综合算式。1×8=88×5=40 4×8=3232÷2=16
7÷9=,5÷7=.
=15÷ =.
3÷ ==0.375= :24=24: .
=2.5:( )=125%=20÷( )=.
5: ==0.25= %