几个数公有的倍数叫做它们的 数,其中最小的公倍数叫做它们的 .
=0.25=4÷ = :28= %
12÷ ==== %= 折.
5: ==1.25=30÷ = %
1==3÷ = : = %= (填小数).
=2: =4÷ = %=0.4.