如图的两个会议室中,哪个更拥挤一些?请说说你的理由.
1+3= .
= .
口算 55+37= 80﹣26= 1400﹣800= 2+210= 9+300= 82+0= 1﹣= += ﹣= .
口算我最棒.+= += ﹣= ﹣=+= 1+= ﹣0.2= +0.3=+= 1﹣+= ﹣﹣= ++=
= = = =0.32= = = == 2x+x=