直接写出得数1﹣25%= ×49= ÷= ×40%=1÷= 5×÷5×= ÷+= ×0=
计算下面各题． ．
= × ==．
口算显身手．×2=×== 12﹣=×= 1×=×0= 3×=×=
口算题．×12=×= 60×=×=
×49= 
÷
= 
×40%=
= 5×
÷5×
÷
+
= 
×0=
．
= × =
=
．
×2=
×
=
=
=
×
= 1×
=
×0= 3×
=
×
=
×12=
×
=
=
×
=
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