easy Set 29 Form Exercise

Number Chain: 2 → -1 → +8 → +4 → ?

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Answer: 13

SubType
number-chain
Start
2
Steps
  • {"op":"-","operand":1}
  • {"op":"+","operand":8}
  • {"op":"+","operand":4}
Difficulty
easy

Number Chain: 7 → +2 → +9 → +1 → ?

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Answer: 19

SubType
number-chain
Start
7
Steps
  • {"op":"+","operand":2}
  • {"op":"+","operand":9}
  • {"op":"+","operand":1}
Difficulty
easy

Number Chain: 5 → -1 → -3 → -1 → ?

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

Number Chain: 7 → +10 → +8 → -13 → ?

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Answer: 12

SubType
number-chain
Start
7
Steps
  • {"op":"+","operand":10}
  • {"op":"+","operand":8}
  • {"op":"-","operand":13}
Difficulty
easy

Number Chain: 7 → -6 → -1 → -1 → ?

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Answer: -1

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

Number Chain: 8 → -6 → +8 → -1 → ?

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Answer: 9

SubType
number-chain
Start
8
Steps
  • {"op":"-","operand":6}
  • {"op":"+","operand":8}
  • {"op":"-","operand":1}
Difficulty
easy

Number Chain: 3 → +6 → +5 → +2 → ?

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Answer: 16

SubType
number-chain
Start
3
Steps
  • {"op":"+","operand":6}
  • {"op":"+","operand":5}
  • {"op":"+","operand":2}
Difficulty
easy

Number Chain: 1 → +3 → +8 → -5 → ?

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Answer: 7

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