easy Set 86 Form Exercise

Number Chain: 7 → -4 → +3 → -1 → ?

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Answer: 5

SubType
number-chain
Start
7
Steps
  • {"op":"-","operand":4}
  • {"op":"+","operand":3}
  • {"op":"-","operand":1}
Difficulty
easy

Number Chain: 9 → +10 → -18 → +4 → ?

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Answer: 5

SubType
number-chain
Start
9
Steps
  • {"op":"+","operand":10}
  • {"op":"-","operand":18}
  • {"op":"+","operand":4}
Difficulty
easy

Number Chain: 6 → -1 → +9 → +4 → ?

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Answer: 18

SubType
number-chain
Start
6
Steps
  • {"op":"-","operand":1}
  • {"op":"+","operand":9}
  • {"op":"+","operand":4}
Difficulty
easy

Number Chain: 3 → +2 → +9 → +6 → ?

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Answer: 20

SubType
number-chain
Start
3
Steps
  • {"op":"+","operand":2}
  • {"op":"+","operand":9}
  • {"op":"+","operand":6}
Difficulty
easy

Number Chain: 4 → -1 → +7 → +1 → ?

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Answer: 11

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

Number Chain: 9 → -4 → -4 → +7 → ?

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Answer: 8

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

Number Chain: 1 → +4 → -1 → +3 → ?

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Answer: 7

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

Number Chain: 1 → -1 → +6 → +5 → ?

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Answer: 11

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