Name Date *Write the missing number. 9 + 1 + 3 = 6 + 3 + 8 = ☐ ☐ 1 16 9 + 2 + 1 = 5 + 9 + 4 = ☐ ☐ 2 17 5 + 5 + 3 = 3 + 12 + 4 = ☐ ☐ 3 18 5 + 2 + 5 = 3 + 11 + 5 = ☐ ☐ 4 19 4 + 5 + 5 = 5 + 6 + 7 = ☐ ☐ 5 20 8 + 2 + 4 = 2 + 6 + 3 = ☐ ☐ 6 21 8 + 3 + 2 = 3 + 2 + 13 = ☐ ☐ 7 22 12 + 2 + 2 = 3 + 13 + 3 = ☐ ☐ 8 23 3 + 3 + 12 = 9 + 1 + = 14 ☐ ☐ 9 24 4 + 4 + 5 = 8 + 4 + = 16 ☐ ☐ 10 25 2 + 15 + 2 = + 8 + 6 = 19 ☐ ☐ 11 26 7 + 3 + 3 = 2 + + 7 = 18 ☐ ☐ 12 27 1 + 17 + 1 = 2 + 2 + = 18 ☐ ☐ 13 28 14 + 2 + 2 = 19 = 6 + + 9 ☐ ☐ 14 29 4 + 12 + 4 = 18 = 7 + + 6 ☐ ☐ 15 30
Name Date *Write the missing number. 1 9 + 1 + 3 = ☐ 16 6 + 3 + 8 = ☐ 2 9 + 2 + 1 = ☐ 17 5 + 9 + 4 = ☐ 3 5 + 5 + 3 = ☐ 18 3 + 12 + 4 = ☐ 4 5 + 2 + 5 = ☐ 19 3 + 11 + 5 = ☐ 5 4 + 5 + 5 = ☐ 20 5 + 6 + 7 = ☐ 6 8 + 2 + 4 = ☐ 21 2 + 6 + 3 = ☐ 7 8 + 3 + 2 = ☐ 22 3 + 2 + 13 = ☐ 8 12 + 2 + 2 = ☐ 23 3 + 13 + 3 = ☐ 9 3 + 3 + 12 = ☐ 24 9 + 1 + ☐ = 14 10 4 + 4 + 5 = ☐ 25 8 + 4 + ☐ = 16 11 2 + 15 + 2 = ☐ 26 ☐ + 8 + 6 = 19 12 7 + 3 + 3 = ☐ 27 2 + ☐ + 7 = 18 13 1 + 17 + 1 = ☐ 28 2 + 2 + ☐ = 18 14 14 + 2 + 2 = ☐ 29 19 = 6 + ☐ + 9 15 4 + 12 + 4 = ☐ 30 18 = 7 + ☐ + 6
03679_201405281418_G1-M3-D-Lesson%2013.docx