6.2小数的加法和减法（2）1.用竖式计算并且验算。49.68+23.2=100-75.34=3.41+1.8=2.1-0.38=2.用小数计算下面各题。6km58m+13km142m9t50kg-4...
6-1小数加减法（1）1.用竖式计算下面各题。18.35+12.35=9.72+7.62=34.72-24.54=88.6-43.7=2.李强家4月份的电话费是65.35元,5月份的电话费是...
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