1、练习二1.8 2 35 43 64 1.441.40.3 7 0.40.1 4 80.1480.082 0.14328820.011480.011481.0 6 2 5 5 3 02 1 226.5026.56.020.8 6 76.0 20.055 0.060.003300.00330.2340.6 0.39 541 80.2342 7 0.4 311.6111.618 11 8212.756.7(元)1.67.512(元)7.27.251.84(元)0.851411.9(元)答:她一共要花11.9元钱。1.283038.4(万千米)答:月球到地球的距离有38.4万千米。1.1310.046
2、47401.5210.0090.010815018.72805(吨)25.93.282.88(米)答:这棵巨杉重2805吨,高82.88米。1.463.55.11(米)答:这只长颈鹿高5.11米。5.111.463.65(米)答:梅花鹿比长颈鹿矮3.65米。3.26.2520(cm2)4.54.520.25(cm2)4.235.924.957(cm2)6.470.5451.2(千米)答:他坐火车的路程是451.2千米。(1)普通冰箱一天的电费是多少?(2)节能冰箱一天的电费是多少?0.50.8=0.4(元)答:普通冰箱一天的电费是0.4元。0.50.22=0.11(元)答:节能冰箱一天的电费是0.11元。650.396.53.96.50.390.653.9