织布工人王阿姨在一段时间内，她的工作量如下表所示．王阿姨这几天平均每天织布多少米？前2天 后3天共322.4米 平均每天179.2米
口算+=﹣=+ =﹣= 1﹣= ﹣=．
+=+=﹣=﹣=﹣= 1﹣= 1﹣=+=﹣=
用你喜欢的方法计算下面各题．+﹣﹣+﹣﹣﹣（﹣）+﹣++++（﹣）﹣+﹣．
直接写得数． 1﹣=+=+= 1﹣﹣=+3=+=+=++=
计算下面各题．=========
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