在1,2,3,4,5,6,7,8,9,10,12,1 6,18,20,24,36,40中,24的因数有 .36的因数有 .24和36的公因数有 .24和36的最大公因数是 .
4÷ = =0.25= :40= %.
÷10==4:5= (填小数)= %.
=0.75=21: = %.
10: = =0.5=5÷ = %.
5÷ =25%= :40= = 折.