Workbook Detail
Number Sense Complements Complement Of 9 — Set 20
Find the complement to 20: 1 + __ = 20
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Answer: 19
- SubType
- complement-of-9
- Total
- 20
- KnownAddend
- 1
- Difficulty
- normal
Find the complement to 100: 65 + __ = 100
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Answer: 35
- SubType
- complement-of-9
- Total
- 100
- KnownAddend
- 65
- Difficulty
- normal
__ + 4 = 10
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Answer: 6
- SubType
- complement-of-9
- Total
- 10
- KnownAddend
- 4
- Difficulty
- normal
__ + 6 = 20
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Answer: 14
- SubType
- complement-of-9
- Total
- 20
- KnownAddend
- 6
- Difficulty
- normal
__ + 93 = 100
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Answer: 7
- SubType
- complement-of-9
- Total
- 100
- KnownAddend
- 93
- Difficulty
- normal
Find the complement to 20: 10 + __ = 20
Show answer
Answer: 10
- SubType
- complement-of-9
- Total
- 20
- KnownAddend
- 10
- Difficulty
- normal
__ + 3 = 10
Show answer
Answer: 7
- SubType
- complement-of-9
- Total
- 10
- KnownAddend
- 3
- Difficulty
- normal
__ + 6 = 100
Show answer
Answer: 94
- SubType
- complement-of-9
- Total
- 100
- KnownAddend
- 6
- Difficulty
- normal
Find the complement to 10: 2 + __ = 10
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Answer: 8
- SubType
- complement-of-9
- Total
- 10
- KnownAddend
- 2
- Difficulty
- normal
__ + 1 = 20
Show answer
Answer: 19
- SubType
- complement-of-9
- Total
- 20
- KnownAddend
- 1
- Difficulty
- normal
Find the complement to 20: 17 + __ = 20
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Answer: 3
- SubType
- complement-of-9
- Total
- 20
- KnownAddend
- 17
- Difficulty
- normal
__ + 39 = 100
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Answer: 61
- SubType
- complement-of-9
- Total
- 100
- KnownAddend
- 39
- Difficulty
- normal
Find the complement to 100: 99 + __ = 100
Show answer
Answer: 1
- SubType
- complement-of-9
- Total
- 100
- KnownAddend
- 99
- Difficulty
- normal
Find the complement to 20: 15 + __ = 20
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Answer: 5
- SubType
- complement-of-9
- Total
- 20
- KnownAddend
- 15
- Difficulty
- normal
What number + 18 = 20?
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Answer: 2
- SubType
- complement-of-9
- Total
- 20
- KnownAddend
- 18
- Difficulty
- normal
__ + 68 = 100
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Answer: 32
- SubType
- complement-of-9
- Total
- 100
- KnownAddend
- 68
- Difficulty
- normal
Find the complement to 100: 70 + __ = 100
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Answer: 30
- SubType
- complement-of-9
- Total
- 100
- KnownAddend
- 70
- Difficulty
- normal