MyMathKidK-8 Curriculum
Common Core: 1.OA
Answer Key
Grade 1 • number-bonds • Easy

Number Bonds 11-15 (Set A)

Find missing parts in bonds from 11 to 15

10 problems

1.
12?8
ans
? + 8 = 12
2.
?210
ans
2 + 10 = ?
3.
?112
ans
1 + 12 = ?
4.
1311?
ans
11 + ? = 13
5.
139?
ans
9 + ? = 13
6.
14?7
ans
? + 7 = 14
7.
?59
ans
5 + 9 = ?
8.
?312
ans
3 + 12 = ?
9.
151?
ans
1 + ? = 15
10.
5?1
ans
? + 1 = 5
Math Worksheets for Kids • Worksheet #nb-11-15-a