图(1)中阴影部分分数______________,图(2)中阴影部分分数______________,图(3)中阴影部分分数______________,
÷ =0.75== %= 折.
: = ÷10= %
==4÷ =8: = %
0.625== = ÷40=.
3:4= :12=12÷ == %