Workbook Detail
Function Machine Subtraction Hard — Set 49
Input: 7 → [×2 + 1] → ?
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Answer: 15
- SubType
- find-output
- Rule
- ×2 + 1
- Input
- 7
- Output
- 15
- Difficulty
- hard
Input: 4 → [-3] → ?
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Answer: 1
- SubType
- find-output
- Rule
- -3
- Input
- 4
- Output
- 1
- Difficulty
- hard
? → [×3] → 21
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Answer: 7
- SubType
- find-input
- Rule
- ×3
- Input
- 7
- Output
- 21
- Difficulty
- hard
Input: 9 → [-3] → ?
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Answer: 6
- SubType
- find-output
- Rule
- -3
- Input
- 9
- Output
- 6
- Difficulty
- hard
Input: 10 → [×3] → ?
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Answer: 30
- SubType
- find-output
- Rule
- ×3
- Input
- 10
- Output
- 30
- Difficulty
- hard
? → [×5] → 40
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Answer: 8
- SubType
- find-input
- Rule
- ×5
- Input
- 8
- Output
- 40
- Difficulty
- hard
? → [+2] → 9
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Answer: 7
- SubType
- find-input
- Rule
- +2
- Input
- 7
- Output
- 9
- Difficulty
- hard
Input: 10 → [?] → 30, what is the rule?
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Answer: ×3
- SubType
- find-rule
- Rule
- ×3
- Input
- 10
- Output
- 30
- Difficulty
- hard
Teaching Notes
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