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Number Chain Mixed Hard — Set 15

Arithmetic B

hard Set 15 Form Exercise

Number Chain: 3 → x5 → -13 → -1 → x4 → x3 → ?

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Answer: 12

SubType: number-chain
Start: 3
Steps: {"op":"x","operand":5}
{"op":"-","operand":13}
{"op":"-","operand":1}
{"op":"x","operand":4}
{"op":"x","operand":3}
Difficulty: hard

Number Chain: 1 → -1 → -1 → -1 → -1 → +3 → ?

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

Number Chain: 11 → +9 → x5 → -40 → -19 → x5 → ?

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Answer: 205

SubType: number-chain
Start: 11
Steps: {"op":"+","operand":9}
{"op":"x","operand":5}
{"op":"-","operand":40}
{"op":"-","operand":19}
{"op":"x","operand":5}
Difficulty: hard

Number Chain: 7 → x2 → x4 → -37 → x4 → +4 → ?

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Answer: 80

SubType: number-chain
Start: 7
Steps: {"op":"x","operand":2}
{"op":"x","operand":4}
{"op":"-","operand":37}
{"op":"x","operand":4}
{"op":"+","operand":4}
Difficulty: hard

Number Chain: 10 → x4 → x2 → -6 → x2 → -102 → ?

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Answer: 46

SubType: number-chain
Start: 10
Steps: {"op":"x","operand":4}
{"op":"x","operand":2}
{"op":"-","operand":6}
{"op":"x","operand":2}
{"op":"-","operand":102}
Difficulty: hard

Number Chain: 12 → -10 → +8 → -8 → x3 → x2 → ?

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Answer: 12

SubType: number-chain
Start: 12
Steps: {"op":"-","operand":10}
{"op":"+","operand":8}
{"op":"-","operand":8}
{"op":"x","operand":3}
{"op":"x","operand":2}
Difficulty: hard

Number Chain: 1 → -1 → x2 → -1 → +2 → -1 → ?

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

Number Chain: 9 → -8 → +5 → -3 → x5 → -9 → ?

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Answer: 6

SubType: number-chain
Start: 9
Steps: {"op":"-","operand":8}
{"op":"+","operand":5}
{"op":"-","operand":3}
{"op":"x","operand":5}
{"op":"-","operand":9}
Difficulty: hard

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