Common Core: 1.OA — Operations & Algebraic Thinking
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Name
Date
Score
/ 10
Number Bonds Within 20 (Set E)
Directions: Find the missing number in each bond.
1.
5 + 12 = ?
2.
2 + 16 = ?
3.
17 + ? = 19
4.
? + 5 = 19
5.
? + 8 = 20
6.
9 + 11 = ?
7.
2 + ? = 5
8.
1 + ? = 6
9.
? + 1 = 6
10.
? + 2 = 7
Great work — check your answers when you finish.
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