easy Set 38 Form Exercise

Number Chain: 1 → -1 → -1 → +2 → ?

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Answer: 1

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

Number Chain: 8 → +3 → +4 → -3 → ?

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Answer: 12

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

Number Chain: 1 → +5 → +7 → -7 → ?

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Answer: 6

SubType
number-chain
Start
1
Steps
  • {"op":"+","operand":5}
  • {"op":"+","operand":7}
  • {"op":"-","operand":7}
Difficulty
easy

Number Chain: 10 → -1 → -5 → -2 → ?

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Answer: 2

SubType
number-chain
Start
10
Steps
  • {"op":"-","operand":1}
  • {"op":"-","operand":5}
  • {"op":"-","operand":2}
Difficulty
easy

Number Chain: 2 → +3 → -1 → -2 → ?

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Answer: 2

SubType
number-chain
Start
2
Steps
  • {"op":"+","operand":3}
  • {"op":"-","operand":1}
  • {"op":"-","operand":2}
Difficulty
easy

Number Chain: 3 → +10 → +2 → +5 → ?

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Answer: 20

SubType
number-chain
Start
3
Steps
  • {"op":"+","operand":10}
  • {"op":"+","operand":2}
  • {"op":"+","operand":5}
Difficulty
easy

Number Chain: 7 → +9 → -9 → +9 → ?

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Answer: 16

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

Number Chain: 8 → +8 → +7 → +2 → ?

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Answer: 25

SubType
number-chain
Start
8
Steps
  • {"op":"+","operand":8}
  • {"op":"+","operand":7}
  • {"op":"+","operand":2}
Difficulty
easy