问题 解答题 口算.0.51÷0.03=32.8+19=5.2÷0.13=l.6×0.4=3.2×6=1÷5=6÷1.5=0.87-0.49= 答案 0.51÷0.03=1732.8+19=51.85.2÷0.13=40l.6×0.4=6.43.2×6=19.21÷5=0.26÷1.5=40.87-0.49=0.38