一、请你口算.(8’)0.38+0.06=0.44(155+20)-65=64.2+5.7= 543-27-73=0.97-0.09=0.8612.8-9.86=17.05-4.58 =9800÷25÷4=3.5+0.6=4.15-0.15= 4.35+5.36= ...