解:根据题目特点,可用简便方法计算,只需将19.86和2.14相加再计算即可:27.46一19.86一2.14=27.46一(19.86十2.14)=27.46一22=5.46
解:27.46-19.86-2.14=27.46-(19.86+2.14)=27.46-22=5.46
=27.46+2.14-19.86=29.6-20+0.14=9.6+0.14=9.74