easy Set 91 Form Exercise

Number Chain: 4 → -1 → -2 → -1 → ?

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

Number Chain: 1 → -1 → +2 → +8 → ?

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Answer: 10

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

Number Chain: 8 → -3 → -3 → +7 → ?

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Answer: 9

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

Number Chain: 7 → -4 → +5 → -3 → ?

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Answer: 5

SubType
number-chain
Start
7
Steps
  • {"op":"-","operand":4}
  • {"op":"+","operand":5}
  • {"op":"-","operand":3}
Difficulty
easy

Number Chain: 4 → +10 → -3 → +4 → ?

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Answer: 15

SubType
number-chain
Start
4
Steps
  • {"op":"+","operand":10}
  • {"op":"-","operand":3}
  • {"op":"+","operand":4}
Difficulty
easy

Number Chain: 1 → +3 → -3 → -1 → ?

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

Number Chain: 4 → -3 → +6 → +5 → ?

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Answer: 12

SubType
number-chain
Start
4
Steps
  • {"op":"-","operand":3}
  • {"op":"+","operand":6}
  • {"op":"+","operand":5}
Difficulty
easy

Number Chain: 5 → -4 → +10 → +10 → ?

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Answer: 21

SubType
number-chain
Start
5
Steps
  • {"op":"-","operand":4}
  • {"op":"+","operand":10}
  • {"op":"+","operand":10}
Difficulty
easy