Unit Week Tractor Additions 5 3 Count on the number line to find the tractor totals. 5 + 1 = ____ 6 + 1 = ____ 8 + 1 = ____ 5 + 2 = ____ 6 + 2 = ____ 8 + 2 = ____ 5 + 3 = ____ 6 + 3 = ____ 8 + 3 = ____ 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 56