在下面的图形中，你能找出几个四边形数？
×0= ×= ÷= ÷=
直接写得数×8= ﹣= ÷3= 21×=2÷= ÷= ×= +=
直接写得数．×6= 30×= ÷= 20÷= +=××0= ×= 1÷×= ﹣50%= ÷6=
直接写得数．×15= ÷3= ÷= 6×=72÷= ÷3= 2×= ××10=
20×=÷=
×0= 
= 
= 
=
×8= 
﹣
= 
÷3= 21×
=
= 
÷
= 
×
= 
+
=
×6= 30×
= 
÷
= 20÷
= 
+
=
×
×0= 
×
= 1÷
= 
﹣50%= 
÷6=
×15= 
÷3= 
÷
= 6×
=
= 
÷3= 2
×
= 
×
×10=
=
÷
=
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