Workbook Detail
Number Bonds Addition Within 20 Fill Both — Set 45
Number bond: 17 = 5 + ?
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Answer: 12
- SubType
- number-bonds
- Total
- 17
- KnownPart
- 5
- MissingPart
- 12
- Difficulty
- normal
16 = 12 + __
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Answer: 4
- SubType
- number-bonds
- Total
- 16
- KnownPart
- 12
- MissingPart
- 4
- Difficulty
- normal
15 = __ + 11
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Answer: 4
- SubType
- number-bonds
- Total
- 15
- KnownPart
- 11
- MissingPart
- 4
- Difficulty
- normal
Number bond: 18 = ? + 15
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Answer: 3
- SubType
- number-bonds
- Total
- 18
- KnownPart
- 15
- MissingPart
- 3
- Difficulty
- normal
7 = __ + 4
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Answer: 3
- SubType
- number-bonds
- Total
- 7
- KnownPart
- 4
- MissingPart
- 3
- Difficulty
- normal
Complete the number bond: 20 = 12 + __
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Answer: 8
- SubType
- number-bonds
- Total
- 20
- KnownPart
- 12
- MissingPart
- 8
- Difficulty
- normal
Complete the number bond: 13 = 8 + __
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Answer: 5
- SubType
- number-bonds
- Total
- 13
- KnownPart
- 8
- MissingPart
- 5
- Difficulty
- normal
Teaching Notes
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