想一想，口里应填几？
五•一班25名男同学，20名女同学．男、女同学各占全班人数的几分之几？
直接写出得数÷= ÷6= ÷= 3÷=48×12.5%= 0.5×= 1÷8×= 5÷÷5=（）×2×3= =
直接写出得数．÷= 1÷= ×= ×8=﹣= ÷= 1÷= ÷6=
用图形表示4÷．
直接写出得数﹣0.625= = 40÷8%= = 3×11= +79×=8﹣4÷= ×1.5+3= = 4×+÷4= = =
÷
= 
÷6= 
÷
= 3÷
=
= 1÷8×
= 5÷
÷5=
）×2×3= 
=
÷
= 1÷
= 
×
= 
×8=
﹣
= 
÷
= 1÷
= 
÷6=
．
﹣0.625= 
= 40÷8%= 
= 3
×11= 
+79×
= 
×1.5+3= 
= 4×
+
= 
=
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