2 + 4 = ____ 1 + 6 = ____ 2 + 5 = ____

21 + 1 = ____ 5 + 4 = ____ 2 + 4 = ____

11 + 2 = ____ 7 + 6 = ____ 4 + 4 = ____

22 + 1 = ____ 2 + 6 = ____ 8 + 4 = ____

23 + 2 = ____ 9 + 6 = ____ 3 + 4 = ____

33 + 1 = ____ 8 + 7 = ____ 5 + 4 = ____

9 + 1 = ____ 1 + 6 = ____ 3 + 3 = ____

3 + 2 = ____ 5 + 5 = ____ 2 + 7 = ____

38 + 1 = ____ 5 + 2 = ____ 6 + 2 = ____

17 + 1 = ____ 4 + 0 = ____ 7 + 7 = ____