6 + 10 = ☐ 15 + 5 = ☐ 6 21 10 + 3 = ☐ 4 + 14 = ☐ 7 22 3 + 3 = 4 + 15 = ☐ ☐ 8 23 10 + 6 = ☐ 12 + ☐ = 14 9 24 2 + 1 = ☐ 12 + ☐ = 15 10 25 12 + 1 = ☐ 12 + ☐ = 16 11 26 2 + 2 = + 4 = 16 ☐ ☐ 12 27 12 + 2 = 5 + = 16 ☐ ☐ 13 28 3 + 3 = ☐ 5 + = 26 ☐ 14 29 13 + 3 = ☐ 4 + = 36 ☐ 15 30 Name Date *Write the missing number. 10 + 1 = 12 + 2 = ☐ ☐ 1 16 1 + 1 = 13 + 2 = ☐ ☐ 2 17 10 + 2 = 14 + 2 = ☐ ☐ 3 18 3 + 10 = 13 + 4 = ☐ ☐ 4 19 3 + 2 = ☐ 14 + 4 = ☐ 5 20
6 6 + 10 = ☐ 21 15 + 5 = ☐ 7 10 + 3 = ☐ 22 4 + 14 = ☐ 8 3 + 3 = ☐ 23 4 + 15 = ☐ 9 10 + 6 = ☐ 24 12 + ☐ = 14 10 2 + 1 = ☐ 25 12 + ☐ = 15 11 12 + 1 = ☐ 26 12 + ☐ = 16 12 2 + 2 = ☐ 27 ☐ + 4 = 16 13 12 + 2 = ☐ 28 5 + ☐ = 16 14 3 + 3 = ☐ 29 5 + ☐ = 26 15 13 + 3 = ☐ 30 4 + ☐ = 36 Name Date *Write the missing number. 1 10 + 1 = ☐ 16 12 + 2 = ☐ 2 1 + 1 = ☐ 17 13 + 2 = ☐ 3 10 + 2 = ☐ 18 14 + 2 = ☐ 4 3 + 10 = ☐ 19 13 + 4 = ☐ 5 3 + 2 = ☐ 20 14 + 4 = ☐