12和10的最大公因数是 .9和36的最小公倍数是 .
21÷ ==14: =87.5%.
小数=6:5==36÷ = %
÷25= :8=27÷ =3.
0.75=12÷ = :12== %= 折.
0.75=12÷ =9: = %