问题 解答题 口算下列各题.9.9+0.01=0.08×0.5=1.25×0.5×0.8=23+14=43-47-37=711+14-711+711= 答案 9.9+0.01=9.91,0.08×0.5=0.04,1.25×0.5×0.8=0.5,23+14=1112,43-47-37=13,711+14-711+711=3944.