Common Core: 2.OA — Operations & Algebraic Thinking
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Name
Date
Score
/ 10
Number Bonds to 50 - Set 4
Directions: Complete each number bond. Parts add up to the whole.
1.
10 + ? = 20
2.
? + 9 = 20
3.
? + 8 = 20
4.
12 + 8 = ?
5.
13 + ? = 20
6.
14 + ? = 20
7.
15 + ? = 20
8.
? + 5 = 20
9.
? + 4 = 20
10.
17 + 3 = ?
Great work — check your answers when you finish.
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