Workbook Detail
Number Bonds Addition Within 20 Fill Both — Set 91
18 = 3 + __
Show answer
Answer: 15
- SubType
- number-bonds
- Total
- 18
- KnownPart
- 3
- MissingPart
- 15
- Difficulty
- normal
Complete the number bond: 11 = __ + 6
Show answer
Answer: 5
- SubType
- number-bonds
- Total
- 11
- KnownPart
- 6
- MissingPart
- 5
- Difficulty
- normal
Complete the number bond: 10 = 2 + __
Show answer
Answer: 8
- SubType
- number-bonds
- Total
- 10
- KnownPart
- 2
- MissingPart
- 8
- Difficulty
- normal
Complete the number bond: 3 = 2 + __
Show answer
Answer: 1
- SubType
- number-bonds
- Total
- 3
- KnownPart
- 2
- MissingPart
- 1
- Difficulty
- normal
8 = 5 + __
Show answer
Answer: 3
- SubType
- number-bonds
- Total
- 8
- KnownPart
- 5
- MissingPart
- 3
- Difficulty
- normal
Complete the number bond: 6 = __ + 3
Show answer
Answer: 3
- SubType
- number-bonds
- Total
- 6
- KnownPart
- 3
- MissingPart
- 3
- Difficulty
- normal
14 = 10 + __
Show answer
Answer: 4
- SubType
- number-bonds
- Total
- 14
- KnownPart
- 10
- MissingPart
- 4
- Difficulty
- normal
Complete the number bond: 16 = __ + 12
Show answer
Answer: 4
- SubType
- number-bonds
- Total
- 16
- KnownPart
- 12
- MissingPart
- 4
- Difficulty
- normal
Teaching Notes
Download this free number bonds addition within 20 fill both 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 Both 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.