求表面积：单位：厘米．
直接写出得数．1﹣ 500×3% ．
直接写出得数．﹣= 0.9﹣0.26= 1.2×= ÷=1﹣÷= 1.25×3×8= 13﹣0.52= 10.2﹣0.32﹣0.68=
2﹣= += ÷=×0+120= 10.01﹣10.01= 3.14×9=
直接写得数．19×9+19=100﹣2.02=30÷30%=+=×=1÷﹣÷1=+÷+=1+2+3+4+5+6+5+4+3+2+1=
直接写出得数．27+58= 910﹣540= 7.8÷10= 78﹣0.98= =7﹣= = =
．
﹣
= 0.9﹣0.26= 1.2×
= 
÷
=
÷
= 1.25×3×8= 13﹣0.52= 10.2﹣0.32﹣0.68=
= 
+
= 
÷
×0+120= 10.01﹣10.01= 3.14×9=
+
=
×
=
+
=
= 
= 
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