easy Set 22 Form Exercise

Number Chain: 2 → +9 → -1 → -9 → ?

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Answer: 1

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

Number Chain: 9 → +8 → -5 → -8 → ?

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Answer: 4

SubType
number-chain
Start
9
Steps
  • {"op":"+","operand":8}
  • {"op":"-","operand":5}
  • {"op":"-","operand":8}
Difficulty
easy

Number Chain: 9 → -2 → +7 → +4 → ?

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Answer: 18

SubType
number-chain
Start
9
Steps
  • {"op":"-","operand":2}
  • {"op":"+","operand":7}
  • {"op":"+","operand":4}
Difficulty
easy

Number Chain: 9 → +9 → +5 → -20 → ?

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Answer: 3

SubType
number-chain
Start
9
Steps
  • {"op":"+","operand":9}
  • {"op":"+","operand":5}
  • {"op":"-","operand":20}
Difficulty
easy

Number Chain: 1 → +5 → -3 → +8 → ?

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Answer: 11

SubType
number-chain
Start
1
Steps
  • {"op":"+","operand":5}
  • {"op":"-","operand":3}
  • {"op":"+","operand":8}
Difficulty
easy

Number Chain: 8 → +2 → -6 → +8 → ?

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Answer: 12

SubType
number-chain
Start
8
Steps
  • {"op":"+","operand":2}
  • {"op":"-","operand":6}
  • {"op":"+","operand":8}
Difficulty
easy

Number Chain: 7 → -6 → -1 → +2 → ?

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Answer: 2

SubType
number-chain
Start
7
Steps
  • {"op":"-","operand":6}
  • {"op":"-","operand":1}
  • {"op":"+","operand":2}
Difficulty
easy

Number Chain: 7 → -5 → -1 → -1 → ?

SubType
number-chain
Start
7
Steps
  • {"op":"-","operand":5}
  • {"op":"-","operand":1}
  • {"op":"-","operand":1}
Difficulty
easy