easy Set 55 Form Exercise

Number Chain: 9 → +4 → -5 → -7 → ?

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Answer: 1

SubType
number-chain
Start
9
Steps
  • {"op":"+","operand":4}
  • {"op":"-","operand":5}
  • {"op":"-","operand":7}
Difficulty
easy

Number Chain: 2 → +4 → -5 → +5 → ?

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Answer: 6

SubType
number-chain
Start
2
Steps
  • {"op":"+","operand":4}
  • {"op":"-","operand":5}
  • {"op":"+","operand":5}
Difficulty
easy

Number Chain: 3 → +8 → +7 → -5 → ?

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Answer: 13

SubType
number-chain
Start
3
Steps
  • {"op":"+","operand":8}
  • {"op":"+","operand":7}
  • {"op":"-","operand":5}
Difficulty
easy

Number Chain: 10 → +10 → -1 → -2 → ?

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Answer: 17

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

Number Chain: 10 → -8 → +6 → +8 → ?

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Answer: 16

SubType
number-chain
Start
10
Steps
  • {"op":"-","operand":8}
  • {"op":"+","operand":6}
  • {"op":"+","operand":8}
Difficulty
easy

Number Chain: 9 → -5 → -2 → -1 → ?

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Answer: 1

SubType
number-chain
Start
9
Steps
  • {"op":"-","operand":5}
  • {"op":"-","operand":2}
  • {"op":"-","operand":1}
Difficulty
easy

Number Chain: 1 → +2 → -1 → -1 → ?

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Answer: 1

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

Number Chain: 3 → +7 → -8 → +9 → ?

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Answer: 11

SubType
number-chain
Start
3
Steps
  • {"op":"+","operand":7}
  • {"op":"-","operand":8}
  • {"op":"+","operand":9}
Difficulty
easy