Name Date *Write the missing number. 9 + 1 + 2 = 6 + 3 + 9 = ☐ ☐ 1 16 9 + 4 + 1 = 4 + 9 + 2 = ☐ ☐ 2 17 5 + 5 + 1 = 2 + 12 + 4 = ☐ ☐ 3 18 5 + 3 + 5 = 2 + 11 + 5 = ☐ ☐ 4 19 4 + 5 + 5 = 6 + 6 + 7 = ☐ ☐ 5 20 8 + 2 + 2 = 2 + 6 + 5 = ☐ ☐ 6 21 8 + 3 + 2 = 3 + 3 + 13 = ☐ ☐ 7 22 11 + 1 + 1 = 3 + 14 + 3 = ☐ ☐ 8 23 2 + 2 + 14 = 9 + 1 + = 13 ☐ ☐ 9 24 4 + 4 + 4 = 8 + 4 + = 15 ☐ ☐ 10 25 2 + 13 + 2 = + 8 + 6 = 18 ☐ ☐ 11 26 6 + 3 + 3 = 2 + + 6 = 18 ☐ ☐ 12 27 1 + 15 + 1 = 2 + 5 + = 18 ☐ ☐ 13 28 15 + 2 + 2 = 19 = 5 + + 9 ☐ ☐ 14 29 3 + 14 + 3 = 19 = 7 + + 6 ☐ ☐ 15 30
Name Date *Write the missing number. 1 9 + 1 + 2 = ☐ 16 6 + 3 + 9 = ☐ 2 9 + 4 + 1 = ☐ 17 4 + 9 + 2 = ☐ 3 5 + 5 + 1 = ☐ 18 2 + 12 + 4 = ☐ 4 5 + 3 + 5 = ☐ 19 2 + 11 + 5 = ☐ 5 4 + 5 + 5 = ☐ 20 6 + 6 + 7 = ☐ 6 8 + 2 + 2 = ☐ 21 2 + 6 + 5 = ☐ 7 8 + 3 + 2 = ☐ 22 3 + 3 + 13 = ☐ 8 11 + 1 + 1 = ☐ 23 3 + 14 + 3 = ☐ 9 2 + 2 + 14 = ☐ 24 9 + 1 + ☐ = 13 10 4 + 4 + 4 = ☐ 25 8 + 4 + ☐ = 15 11 2 + 13 + 2 = ☐ 26 ☐ + 8 + 6 = 18 12 6 + 3 + 3 = ☐ 27 2 + ☐ + 6 = 18 13 1 + 15 + 1 = ☐ 28 2 + 5 + ☐ = 18 14 15 + 2 + 2 = ☐ 29 19 = 5 + ☐ + 9 15 3 + 14 + 3 = ☐ 30 19 = 7 + ☐ + 6