Common Core: 1.OA — Operations & Algebraic Thinking
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Name
Date
Score
/ 10
Number Bonds Within 20 (Set B)
Directions: Find the missing number in each bond.
1.
11 + ? = 15
2.
? + 7 = 16
3.
? + 10 = 17
4.
5 + 12 = ?
5.
2 + 16 = ?
6.
17 + ? = 19
7.
? + 5 = 19
8.
? + 8 = 20
9.
9 + 11 = ?
10.
2 + ? = 5
Great work — check your answers when you finish.
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