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单击此处编辑母版文本样式,第二级,第三级,第四级,Page,*,单击此处编辑母版标题样式,分数加减混合运算,坂中中心小学 五(,4,)班,257,28,72,257,(,28,72,),257,100,157,149,(,49,78,),149,49,78,100,78,22,找,朋友,6,5,7,6,40,11,1,花园面积的,花园面积的,连减,先加,4,3,3,1,12,5,1,12,7,12,5,45,25,=,45,30,+,45,18,45,17,=,1,3,2,3,1,=,10,7,:表示把,全国人口数,看作“,1”,平均分成,10,份,农村人口数占这样的,7,份。,1,10,7,10,3,=,24,18,=,45,17,=,5,4,=,24,15,+,24,20,15,7,3,1,=,30,20,=,6,7,=,30,24,+,30,9,7,3,=,7,1,7,2,=,5,1,+,6,1,+,10,3,30,9,=,30,6,+,30,5,+,3,2,=,(小时),4,1,+,5,1,+,4,1,2,1,=,5,1,+,(升),10,7,=,(,1,)三人一共喝了多少升牛奶?,1,10,7,10,3,=,(升),(,2,)这盒,1,升的牛奶还剩多少升?,“,1”,1,6,5,6,1,=,第,4,题,答:这一季度出口的彩色电视机大约占 。,
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