Workbook Detail
Number Sense Number Bonds Bonds To 20 — Set 68
Number bond: 13 = ? + 4
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Answer: 9
- SubType
- number-bonds
- Total
- 13
- KnownPart
- 4
- MissingPart
- 9
- Difficulty
- normal
12 = 10 + __
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Answer: 2
- SubType
- number-bonds
- Total
- 12
- KnownPart
- 10
- MissingPart
- 2
- Difficulty
- normal
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: 20 = __ + 3
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Answer: 17
- SubType
- number-bonds
- Total
- 20
- KnownPart
- 3
- MissingPart
- 17
- Difficulty
- normal
Number bond: 18 = 8 + ?
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Answer: 10
- SubType
- number-bonds
- Total
- 18
- KnownPart
- 8
- MissingPart
- 10
- Difficulty
- normal
10 = __ + 1
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Answer: 9
- SubType
- number-bonds
- Total
- 10
- KnownPart
- 1
- MissingPart
- 9
- Difficulty
- normal
Number bond: 5 = ? + 4
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Answer: 1
- SubType
- number-bonds
- Total
- 5
- KnownPart
- 4
- MissingPart
- 1
- Difficulty
- normal
Complete the number bond: 17 = 14 + __
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Answer: 3
- SubType
- number-bonds
- Total
- 17
- KnownPart
- 14
- MissingPart
- 3
- Difficulty
- normal