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Number Chain Patterns Hard — Set 97

Arithmetic B

hard Set 97 Form Exercise

Number Chain: 12 → +8 → -2 → -4 → x2 → -13 → ?

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Answer: 15

SubType: number-chain
Start: 12
Steps: {"op":"+","operand":8}
{"op":"-","operand":2}
{"op":"-","operand":4}
{"op":"x","operand":2}
{"op":"-","operand":13}
Difficulty: hard

Number Chain: 3 → -2 → x5 → -4 → +7 → -5 → ?

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Answer: 3

SubType: number-chain
Start: 3
Steps: {"op":"-","operand":2}
{"op":"x","operand":5}
{"op":"-","operand":4}
{"op":"+","operand":7}
{"op":"-","operand":5}
Difficulty: hard

Number Chain: 2 → +7 → +6 → x3 → x4 → x2 → ?

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Answer: 360

SubType: number-chain
Start: 2
Steps: {"op":"+","operand":7}
{"op":"+","operand":6}
{"op":"x","operand":3}
{"op":"x","operand":4}
{"op":"x","operand":2}
Difficulty: hard

Number Chain: 1 → -1 → x4 → +2 → -1 → -1 → ?

SubType: number-chain
Start: 1
Steps: {"op":"-","operand":1}
{"op":"x","operand":4}
{"op":"+","operand":2}
{"op":"-","operand":1}
{"op":"-","operand":1}
Difficulty: hard

Number Chain: 10 → -4 → x4 → -9 → +5 → x2 → ?

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Answer: 40

SubType: number-chain
Start: 10
Steps: {"op":"-","operand":4}
{"op":"x","operand":4}
{"op":"-","operand":9}
{"op":"+","operand":5}
{"op":"x","operand":2}
Difficulty: hard

Number Chain: 3 → x2 → -3 → +11 → x2 → +3 → ?

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Answer: 31

SubType: number-chain
Start: 3
Steps: {"op":"x","operand":2}
{"op":"-","operand":3}
{"op":"+","operand":11}
{"op":"x","operand":2}
{"op":"+","operand":3}
Difficulty: hard

Number Chain: 1 → -1 → -1 → +7 → x5 → x2 → ?

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Answer: 60

SubType: number-chain
Start: 1
Steps: {"op":"-","operand":1}
{"op":"-","operand":1}
{"op":"+","operand":7}
{"op":"x","operand":5}
{"op":"x","operand":2}
Difficulty: hard

Number Chain: 5 → -1 → +10 → x5 → x3 → +3 → ?

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Answer: 213

SubType: number-chain
Start: 5
Steps: {"op":"-","operand":1}
{"op":"+","operand":10}
{"op":"x","operand":5}
{"op":"x","operand":3}
{"op":"+","operand":3}
Difficulty: hard

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