a和b是两个自然数,a÷b=5,那么这两个数的最大公因数是 ,最小公倍数是 .
15÷ = :16=0.125== %.
12÷ == :80= %
4÷ =0.8== :40= %= 成.
15: ==0.75= %=6÷ .
÷8==0.5= :24.