求下面右边物体的体积．（单位：cm）
直接写出得数.= 1﹣40%= = 52= 1÷= =3﹣= = = = 0.8×÷=
看谁算得快．= 1﹣= = == 1﹣= = =1﹣= = = 1﹣=
怎样算简便就怎样算．①= ②= ③= ④= ．
直接写出得数．+= ﹣= ﹣= 1﹣=﹣= +=
计算下列各题，能简算的要简算．．
= 1﹣40%= 
= 52= 1÷
= 
=
= 
= 
= 
= 0.8×
÷
=
= 1﹣
= 
= 
=
= 1﹣
= 
= 
=
= 
= 
= 1﹣
=
= 
= 
= 
= ．
+
= 
﹣
= 
﹣
= 1﹣
=
﹣
= 
+
=
．
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