Workbook Detail
Number Bonds To 20 Hard — Set 72
Complete the number bond: 2 = 1 + __
Show answer
Answer: 1
- SubType
- number-bonds
- Total
- 2
- KnownPart
- 1
- MissingPart
- 1
- Difficulty
- hard
4 = __ + 3
Show answer
Answer: 1
- SubType
- number-bonds
- Total
- 4
- KnownPart
- 3
- MissingPart
- 1
- Difficulty
- hard
Number bond: 5 = 2 + ?
Show answer
Answer: 3
- SubType
- number-bonds
- Total
- 5
- KnownPart
- 2
- MissingPart
- 3
- Difficulty
- hard
Number bond: 9 = 1 + ?
Show answer
Answer: 8
- SubType
- number-bonds
- Total
- 9
- KnownPart
- 1
- MissingPart
- 8
- Difficulty
- hard
Number bond: 10 = ? + 1
Show answer
Answer: 9
- SubType
- number-bonds
- Total
- 10
- KnownPart
- 1
- MissingPart
- 9
- Difficulty
- hard
Number bond: 8 = ? + 4
Show answer
Answer: 4
- SubType
- number-bonds
- Total
- 8
- KnownPart
- 4
- MissingPart
- 4
- Difficulty
- hard
5 = 4 + __
Show answer
Answer: 1
- SubType
- number-bonds
- Total
- 5
- KnownPart
- 4
- MissingPart
- 1
- 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.