My problem solving.

Walt: use strategies we already know to solve decimal problems. First I did 2.5 + 1.2 and then I add 5 + 2, 5 from 2.5 and 2 from 1.2 so 5 + 2 = 7 and then I did 2 + 1, 2 from 2.5 and 1 from 1.2 so 2 + 1 = 3 and the answer is 3.7..