Workbook Detail
Number Bonds Addition Within 20 Fill One — Set 29
Number bond: 10 = ? + 6
Show answer
Answer: 4
- SubType
- number-bonds
- Total
- 10
- KnownPart
- 6
- MissingPart
- 4
- Difficulty
- normal
8 = __ + 5
Show answer
Answer: 3
- SubType
- number-bonds
- Total
- 8
- KnownPart
- 5
- MissingPart
- 3
- Difficulty
- normal
Complete the number bond: 8 = 1 + __
Show answer
Answer: 7
- SubType
- number-bonds
- Total
- 8
- KnownPart
- 1
- MissingPart
- 7
- Difficulty
- normal
Complete the number bond: 15 = __ + 10
Show answer
Answer: 5
- SubType
- number-bonds
- Total
- 15
- KnownPart
- 10
- MissingPart
- 5
- Difficulty
- normal
20 = 18 + __
Show answer
Answer: 2
- SubType
- number-bonds
- Total
- 20
- KnownPart
- 18
- MissingPart
- 2
- Difficulty
- normal
Number bond: 20 = ? + 1
Show answer
Answer: 19
- SubType
- number-bonds
- Total
- 20
- KnownPart
- 1
- MissingPart
- 19
- Difficulty
- normal
Number bond: 8 = ? + 3
Show answer
Answer: 5
- SubType
- number-bonds
- Total
- 8
- KnownPart
- 3
- MissingPart
- 5
- Difficulty
- normal
17 = __ + 10
Show answer
Answer: 7
- SubType
- number-bonds
- Total
- 17
- KnownPart
- 10
- MissingPart
- 7
- 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.