easy Set 55 Form Exercise

Number Chain: 10 → +1 → -9 → +5 → ?

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Answer: 7

SubType
number-chain
Start
10
Steps
  • {"op":"+","operand":1}
  • {"op":"-","operand":9}
  • {"op":"+","operand":5}
Difficulty
easy

Number Chain: 5 → +6 → +10 → -3 → ?

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Answer: 18

SubType
number-chain
Start
5
Steps
  • {"op":"+","operand":6}
  • {"op":"+","operand":10}
  • {"op":"-","operand":3}
Difficulty
easy

Number Chain: 7 → +4 → +1 → -7 → ?

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Answer: 5

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

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: 2 → +3 → +7 → +5 → ?

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Answer: 17

SubType
number-chain
Start
2
Steps
  • {"op":"+","operand":3}
  • {"op":"+","operand":7}
  • {"op":"+","operand":5}
Difficulty
easy

Number Chain: 9 → -7 → +6 → -3 → ?

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Answer: 5

SubType
number-chain
Start
9
Steps
  • {"op":"-","operand":7}
  • {"op":"+","operand":6}
  • {"op":"-","operand":3}
Difficulty
easy

Number Chain: 8 → -5 → -1 → -1 → ?

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Answer: 1

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

Number Chain: 8 → -7 → -1 → +1 → ?

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Answer: 1

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