问题 解答题 口算:1.5+0.5=______;2.1+0.6=______;0.8-0.76=______;2.38+0.7=______;0.26-0.12=______;9.6-2.8=______. 答案 1.5+0.5=2;2.1+0.6=2.7;0.8-0.76=0.04;2.38+0.7=3.08;0.26-0.12=0.14;9.6-2.8=6.8.故答案为:2,2.7,0.04,3.08,0.14,6.8.