easy Set 20 Form Exercise

Number Chain: 2 → -1 → +5 → -5 → ?

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Answer: 1

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

Number Chain: 10 → -5 → -1 → -2 → ?

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Answer: 2

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

Number Chain: 6 → +10 → +6 → +9 → ?

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Answer: 31

SubType
number-chain
Start
6
Steps
  • {"op":"+","operand":10}
  • {"op":"+","operand":6}
  • {"op":"+","operand":9}
Difficulty
easy

Number Chain: 6 → +8 → -13 → -1 → ?

SubType
number-chain
Start
6
Steps
  • {"op":"+","operand":8}
  • {"op":"-","operand":13}
  • {"op":"-","operand":1}
Difficulty
easy

Number Chain: 2 → +5 → +5 → -11 → ?

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Answer: 1

SubType
number-chain
Start
2
Steps
  • {"op":"+","operand":5}
  • {"op":"+","operand":5}
  • {"op":"-","operand":11}
Difficulty
easy

Number Chain: 6 → +10 → -8 → +10 → ?

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Answer: 18

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

Number Chain: 3 → +8 → +3 → -4 → ?

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Answer: 10

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

Number Chain: 8 → +2 → +1 → +5 → ?

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Answer: 16

SubType
number-chain
Start
8
Steps
  • {"op":"+","operand":2}
  • {"op":"+","operand":1}
  • {"op":"+","operand":5}
Difficulty
easy