问题 解答题 用竖式计算．4.5+2.7=3.46+6.6=9-2.45=4.2×7=0.24×1.5=14×0.56= 答案 4.5+2.7=7.23.46+6.6=10.069-2.45=6.554.2×7=29.40.24×1.5=0.3614×0.56=7.84
