Workbook Detail
Number Bonds To 20 Hard — Set 75
Complete the number bond: 8 = __ + 4
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Answer: 4
- SubType
- number-bonds
- Total
- 8
- KnownPart
- 4
- MissingPart
- 4
- Difficulty
- hard
9 = __ + 3
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Answer: 6
- SubType
- number-bonds
- Total
- 9
- KnownPart
- 3
- MissingPart
- 6
- Difficulty
- hard
Complete the number bond: 6 = 5 + __
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Answer: 1
- SubType
- number-bonds
- Total
- 6
- KnownPart
- 5
- MissingPart
- 1
- Difficulty
- hard
Number bond: 10 = ? + 6
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Answer: 4
- SubType
- number-bonds
- Total
- 10
- KnownPart
- 6
- MissingPart
- 4
- Difficulty
- hard
3 = __ + 1
Show answer
Answer: 2
- SubType
- number-bonds
- Total
- 3
- KnownPart
- 1
- MissingPart
- 2
- Difficulty
- hard
Complete the number bond: 8 = 4 + __
Show answer
Answer: 4
- SubType
- number-bonds
- Total
- 8
- KnownPart
- 4
- MissingPart
- 4
- Difficulty
- hard
Complete the number bond: 8 = 3 + __
Show answer
Answer: 5
- SubType
- number-bonds
- Total
- 8
- KnownPart
- 3
- MissingPart
- 5
- Difficulty
- hard
Complete the number bond: 3 = 1 + __
Show answer
Answer: 2
- SubType
- number-bonds
- Total
- 3
- KnownPart
- 1
- MissingPart
- 2
- Difficulty
- hard
Teaching Notes
Practice number bonds to 20 with free printable worksheets. Uniquely generated — reinforce key math skills with every set.
Frequently Asked Questions
How do I use this Number Bonds To 20 Hard Worksheets 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.