Workbook Detail
Number Sense Complements Complement Of 9 — Set 55
What number + 3 = 20?
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Answer: 17
- SubType
- complement-of-9
- Total
- 20
- KnownAddend
- 3
- Difficulty
- normal
What number + 72 = 100?
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Answer: 28
- SubType
- complement-of-9
- Total
- 100
- KnownAddend
- 72
- Difficulty
- normal
Find the complement to 20: 13 + __ = 20
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Answer: 7
- SubType
- complement-of-9
- Total
- 20
- KnownAddend
- 13
- Difficulty
- normal
__ + 1 = 10
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Answer: 9
- SubType
- complement-of-9
- Total
- 10
- KnownAddend
- 1
- Difficulty
- normal
__ + 6 = 20
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Answer: 14
- SubType
- complement-of-9
- Total
- 20
- KnownAddend
- 6
- Difficulty
- normal
__ + 18 = 20
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Answer: 2
- SubType
- complement-of-9
- Total
- 20
- KnownAddend
- 18
- Difficulty
- normal
__ + 45 = 100
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Answer: 55
- SubType
- complement-of-9
- Total
- 100
- KnownAddend
- 45
- Difficulty
- normal
__ + 72 = 100
Show answer
Answer: 28
- SubType
- complement-of-9
- Total
- 100
- KnownAddend
- 72
- Difficulty
- normal
Find the complement to 10: 9 + __ = 10
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Answer: 1
- SubType
- complement-of-9
- Total
- 10
- KnownAddend
- 9
- Difficulty
- normal
__ + 3 = 20
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Answer: 17
- SubType
- complement-of-9
- Total
- 20
- KnownAddend
- 3
- Difficulty
- normal
__ + 8 = 20
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Answer: 12
- SubType
- complement-of-9
- Total
- 20
- KnownAddend
- 8
- Difficulty
- normal
__ + 88 = 100
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Answer: 12
- SubType
- complement-of-9
- Total
- 100
- KnownAddend
- 88
- Difficulty
- normal
What number + 51 = 100?
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Answer: 49
- SubType
- complement-of-9
- Total
- 100
- KnownAddend
- 51
- Difficulty
- normal
__ + 81 = 100
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Answer: 19
- SubType
- complement-of-9
- Total
- 100
- KnownAddend
- 81
- Difficulty
- normal
Find the complement to 20: 18 + __ = 20
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Answer: 2
- SubType
- complement-of-9
- Total
- 20
- KnownAddend
- 18
- Difficulty
- normal
__ + 19 = 20
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Answer: 1
- SubType
- complement-of-9
- Total
- 20
- KnownAddend
- 19
- Difficulty
- normal
Find the complement to 100: 83 + __ = 100
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Answer: 17
- SubType
- complement-of-9
- Total
- 100
- KnownAddend
- 83
- Difficulty
- normal
What number + 13 = 20?
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Answer: 7
- SubType
- complement-of-9
- Total
- 20
- KnownAddend
- 13
- Difficulty
- normal
Find the complement to 10: 7 + __ = 10
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Answer: 3
- SubType
- complement-of-9
- Total
- 10
- KnownAddend
- 7
- Difficulty
- normal