easy Set 45 Form Exercise

Number Chain: 9 → -2 → +7 → +6 → ?

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Answer: 20

SubType
number-chain
Start
9
Steps
  • {"op":"-","operand":2}
  • {"op":"+","operand":7}
  • {"op":"+","operand":6}
Difficulty
easy

Number Chain: 9 → -3 → +1 → -1 → ?

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Answer: 6

SubType
number-chain
Start
9
Steps
  • {"op":"-","operand":3}
  • {"op":"+","operand":1}
  • {"op":"-","operand":1}
Difficulty
easy

Number Chain: 1 → -1 → -1 → -1 → ?

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Answer: -2

SubType
number-chain
Start
1
Steps
  • {"op":"-","operand":1}
  • {"op":"-","operand":1}
  • {"op":"-","operand":1}
Difficulty
easy

Number Chain: 2 → +5 → +6 → -6 → ?

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Answer: 7

SubType
number-chain
Start
2
Steps
  • {"op":"+","operand":5}
  • {"op":"+","operand":6}
  • {"op":"-","operand":6}
Difficulty
easy

Number Chain: 2 → -1 → +9 → +9 → ?

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Answer: 19

SubType
number-chain
Start
2
Steps
  • {"op":"-","operand":1}
  • {"op":"+","operand":9}
  • {"op":"+","operand":9}
Difficulty
easy

Number Chain: 4 → -1 → -2 → +4 → ?

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Answer: 5

SubType
number-chain
Start
4
Steps
  • {"op":"-","operand":1}
  • {"op":"-","operand":2}
  • {"op":"+","operand":4}
Difficulty
easy

Number Chain: 8 → +9 → +2 → -4 → ?

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Answer: 15

SubType
number-chain
Start
8
Steps
  • {"op":"+","operand":9}
  • {"op":"+","operand":2}
  • {"op":"-","operand":4}
Difficulty
easy

Number Chain: 3 → -1 → +9 → +10 → ?

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Answer: 21

SubType
number-chain
Start
3
Steps
  • {"op":"-","operand":1}
  • {"op":"+","operand":9}
  • {"op":"+","operand":10}
Difficulty
easy