礼物盒是长方体，长12厘米，宽7厘米，高6厘米．要给这个盒子包上包装纸，一共要多大的包装纸？（不计损耗）
．
直接写出得数①= ②= ③= ④1﹣= ⑤=⑥= ⑦= ⑧1﹣= ⑨6﹣（）= ⑩=
计算．．
直接写得数．﹣= 1﹣= += ﹣= += +7=4﹣= ﹣0.9= ﹣= += ﹣1= ++=
口算下面各题．+= ﹣= += ﹣= 6.4+2.3= 7.3﹣0.4=1.1+2.8= 707÷7= 360÷3= 93÷3= 40×25= 720÷4=80﹣25= 36×0=
．
= ②
= ③
= ④1﹣
= ⑤
=
= ⑦
= ⑧1﹣
= ⑨6﹣（
）= ⑩
=
．
﹣
= 1﹣
= 
+
= 
﹣
= 
+
= 
+7=
= 
﹣0.9= 
﹣
= 
+
= 
﹣1= 
+
+
=
+
= 
﹣
= 
+
= 
﹣
= 6.4+2.3= 7.3﹣0.4=
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