用64米长的篱笆围成一个圆形苗圃，篱笆接头处用去1.2米。苗圃的面积多少？
直接写得数： 2062﹣498= 1564468÷12= 3916.8﹣7= 9.81.25×2.4= 75÷2.5= 304÷100= 0.04÷= 12﹣= ．
12.5×8= 3.4== 0.125×7×8= 1===（=
看谁算得快． 0.36+1.7=×= 0.32×0.05= 1.2÷=×÷×= 6.8﹣1.08= 50×30%=﹣﹣= 0.18÷0.12=（+）×8=
直接写出得数． 25×24= 4.2÷0.2== 12﹣2== 1.25×= 1÷0.6= 4÷2=
73÷9．
÷
= 12
﹣
= ．÷= 12﹣= ．
=
= 0.125×7×8=
=
=
=（
=
×
= 0.32×0.05= 1.2÷
=
×
÷
×
= 6.8﹣1.08= 50×30%=
﹣
﹣
=
+
= 12﹣2
=
= 1.25×
= 1÷0.6= 4
÷2=
÷9．
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