1.2+0.3 = 5.4-2.3= 0.65+0.35 = 1-0.09 =
6.85+1.05 = 4.89-2.7 = 10-9.9 = 3.27+0.73=
4.2-4 = 5.1-2.1 = 4.3 +2.7 = 5+ 4.4 =