easy Set 70 Form Exercise

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: 10 → +9 → +2 → +1 → ?

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Answer: 22

SubType
number-chain
Start
10
Steps
  • {"op":"+","operand":9}
  • {"op":"+","operand":2}
  • {"op":"+","operand":1}
Difficulty
easy

Number Chain: 4 → -2 → +4 → -4 → ?

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Answer: 2

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

Number Chain: 6 → +5 → -2 → +1 → ?

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Answer: 10

SubType
number-chain
Start
6
Steps
  • {"op":"+","operand":5}
  • {"op":"-","operand":2}
  • {"op":"+","operand":1}
Difficulty
easy

Number Chain: 4 → +4 → +3 → +8 → ?

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Answer: 19

SubType
number-chain
Start
4
Steps
  • {"op":"+","operand":4}
  • {"op":"+","operand":3}
  • {"op":"+","operand":8}
Difficulty
easy

Number Chain: 3 → -1 → -1 → +5 → ?

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Answer: 6

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

Number Chain: 4 → -3 → -1 → +9 → ?

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Answer: 9

SubType
number-chain
Start
4
Steps
  • {"op":"-","operand":3}
  • {"op":"-","operand":1}
  • {"op":"+","operand":9}
Difficulty
easy

Number Chain: 9 → +2 → -8 → +8 → ?

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Answer: 11

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