easy Set 80 Form Exercise

Number Chain: 3 → -1 → -1 → +1 → ?

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Answer: 2

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

Number Chain: 10 → -3 → -1 → +3 → ?

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Answer: 9

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

Number Chain: 9 → -7 → +1 → -2 → ?

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Answer: 1

SubType
number-chain
Start
9
Steps
  • {"op":"-","operand":7}
  • {"op":"+","operand":1}
  • {"op":"-","operand":2}
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: 4 → +8 → +1 → -7 → ?

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Answer: 6

SubType
number-chain
Start
4
Steps
  • {"op":"+","operand":8}
  • {"op":"+","operand":1}
  • {"op":"-","operand":7}
Difficulty
easy

Number Chain: 3 → -2 → +4 → +10 → ?

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Answer: 15

SubType
number-chain
Start
3
Steps
  • {"op":"-","operand":2}
  • {"op":"+","operand":4}
  • {"op":"+","operand":10}
Difficulty
easy

Number Chain: 4 → -1 → -1 → +8 → ?

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Answer: 10

SubType
number-chain
Start
4
Steps
  • {"op":"-","operand":1}
  • {"op":"-","operand":1}
  • {"op":"+","operand":8}
Difficulty
easy

Number Chain: 4 → +7 → -6 → -2 → ?

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Answer: 3

SubType
number-chain
Start
4
Steps
  • {"op":"+","operand":7}
  • {"op":"-","operand":6}
  • {"op":"-","operand":2}
Difficulty
easy