Common Core: 1.OA — Operations & Algebraic Thinking
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Name
Date
Score
/ 10
Number Bonds Within 20 (Set A)
Directions: Find missing parts in bonds to 20
1.
13 + 2 = ?
2.
11 + ? = 15
3.
? + 7 = 16
4.
? + 10 = 17
5.
5 + 12 = ?
6.
2 + 16 = ?
7.
17 + ? = 19
8.
? + 5 = 19
9.
? + 8 = 20
10.
9 + 11 = ?
Great work — check your answers when you finish.
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