Common Core: 2.OA — Operations & Algebraic Thinking
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Name
Date
Score
/ 10
Number Bonds to 20 - Set 1
Directions: Complete each number bond. Parts add up to the whole.
1.
6 + ? = 11
2.
5 + ? = 12
3.
? + 9 = 12
4.
? + 12 = 13
5.
12 + 2 = ?
6.
10 + ? = 14
7.
9 + ? = 15
8.
? + 9 = 15
9.
? + 12 = 16
10.
2 + 15 = ?
Great work — check your answers when you finish.
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