Workbook Detail
Number Bonds Addition Within 20 Fill One — Set 15
16 = 14 + __
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Answer: 2
- SubType
- number-bonds
- Total
- 16
- KnownPart
- 14
- MissingPart
- 2
- Difficulty
- normal
Number bond: 7 = 1 + ?
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Answer: 6
- SubType
- number-bonds
- Total
- 7
- KnownPart
- 1
- MissingPart
- 6
- Difficulty
- normal
Number bond: 13 = 4 + ?
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Answer: 9
- SubType
- number-bonds
- Total
- 13
- KnownPart
- 4
- MissingPart
- 9
- Difficulty
- normal
Complete the number bond: 15 = __ + 1
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Answer: 14
- SubType
- number-bonds
- Total
- 15
- KnownPart
- 1
- MissingPart
- 14
- Difficulty
- normal
Complete the number bond: 5 = __ + 2
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Answer: 3
- SubType
- number-bonds
- Total
- 5
- KnownPart
- 2
- MissingPart
- 3
- Difficulty
- normal
10 = __ + 6
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Answer: 4
- SubType
- number-bonds
- Total
- 10
- KnownPart
- 6
- MissingPart
- 4
- Difficulty
- normal
Complete the number bond: 2 = 1 + __
Show answer
Answer: 1
- SubType
- number-bonds
- Total
- 2
- KnownPart
- 1
- MissingPart
- 1
- Difficulty
- normal
Complete the number bond: 15 = 1 + __
Show answer
Answer: 14
- SubType
- number-bonds
- Total
- 15
- KnownPart
- 1
- MissingPart
- 14
- Difficulty
- normal
Teaching Notes
Download this free number bonds addition within 20 fill one math worksheet. Uniquely generated with an answer key — great for homework, practice, or assessment.
Frequently Asked Questions
How do I use this Number Bonds Addition Within 20 Fill One Math Worksheet worksheet?
Print the worksheet and complete the problems. Each set number generates a unique arrangement. Use the same set number for all students in a class for consistent assessment.
Is there an answer key?
Yes — every worksheet includes a complete answer key. Print it separately or view it on screen.