我能算出下面图形的周长．（单位：cm）
直接写出得数．÷= 0×= ÷= 1+=×= ÷= ×= ÷=
直接写得数．×8= ÷= = 6÷=÷= 21×= 1﹣÷= ×=
直接写出得数．1÷100÷10= 1﹣= +1÷3= 6×=60%÷12= ×= ÷= 500×3%=
直接写出得数：×8= ÷2= ÷= ×=×= 1÷= ÷60%= ×15=﹣= 6.8÷10%= 4.5+= ×=
直接写出得数．×30= 2÷= ÷= ﹣=÷= ××= +12.5%= ÷=
÷
= 
÷
= 1+
=
×
= 
÷
= 
×
= 
÷
=
×8= 
÷
= 
= 6÷
=
÷
= 1﹣
÷
×
=
= 
+1÷3= 6×
=
×
= 500×3%=
×8= 
÷2= 
÷
= 
×
=
×
= 1÷
= 
÷60%= 
×15=
﹣
×
=
×30= 2÷
÷
= 
﹣
=
÷
= 
×
×
= 
+12.5%= 
÷
=
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