积的近似数练习,0.21 4 =,0.4 0.5 =,0.2 4.8 =,0.6 0.7 =,0.02 0.03 =,0.84,0.8 1.1 =,0.21 400 =,0.2,0.96,0.0006,0.42,0.88,84,将下面的表格填完整。,1,0.5,0.53,2,1.7,1.69,0.173.14,0.5338,0.941.8,1.692,一幢大楼有 21 层,每层高 2.84 米。这幢大楼约高多少米?(得数保留整数),2.8421,60(米),答:这幢大楼约高60米。,请你来计算,世界上第一台电子计算机很大,它的质量相当于 6 头 5.85 吨重的大象,这台计算机有多重?(得数保留整数),5.856,答:这台计算机重 35吨。, 35(吨),5. 8 5 63 5 .1 0,答:应付14.88元。,14.88(元),妈妈去买花布,每米价钱是 5.95元。妈妈买了2.5米,应付多少钱?,5.95 2.5,实际付款时,通常只算到“分”,所以只要保留两位小数。,