过A点分别画直线的垂线和平行线．
直接写出得数．÷= 0.125+= 3×= +×4=﹣= 1﹣75%= ÷0.01= 0÷+=
直接写出得数：47+199= ÷6= 3÷0.9= 13.5÷9=6÷7×= ﹣= 40.5﹣0.05= 2÷10%=×= 6900÷30=
直接写得数．÷3= 10÷= ÷= ×=÷= ×= 4×= 1﹣=
计算×60= ×= ×=××= ÷5= 30÷=÷= ×÷=
直接写出得数．2.4﹣=16×20=÷6=（2﹣）×20%=2.2+3.57=+=×=14﹣14÷2=
÷
= 0.125+
= 3×
= 
+
×4=
﹣
= 1﹣75%= 
÷0.01= 0÷
+
÷6= 3÷0.9= 13.5÷9=
= 
= 40.5﹣0.05= 2÷10%=
×
= 6900÷30=
÷3= 10÷
= 
÷
= 
×
=
÷
= 
×
= 1﹣
=
×60= 
×
= 
×
×
×
÷5= 30÷
=
÷
= 
÷
=
=
÷6=
）×20%=
=
×
=
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