如图，过已知直线外一点A，分别作已知直线的平行线和垂线．
直接写得数．12×= 6÷= ÷= 1÷×=×18= ×0×= ×= ×26=
直接写出得数．×60= 12÷= 3.14×42= （）2=×= += ÷= ÷=
直接写得数．×4= += += ÷=25÷= ﹣= ÷5= ×=2÷= ﹣= ×12= 2﹣﹣=
口算= = = == = = =
直接写出得数．= = 11= == 0÷1.2= = == = = =12= = = 54=
= 6÷
= 
÷
= 1÷
×
=
×18= 
×0×
= 
×
= 
×26=
×60= 12÷
= 3.14×42= （
）2=
×
= 
+
= 
÷
÷
=
×4= 
+
= 
+
= 
÷
=
= 
﹣
= 
×
=
= 
﹣
= 
=
= 
= 
= 
=
= 
= 
= 
=
= 
= 11
= 
=
= 0÷1.2= 
= 
=
= 
= 
= 
=
= 
= 
= 54
=
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