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Number Chain Mixed Hard — Set 88

Arithmetic B

hard Set 88 Form Exercise

Number Chain: 11 → +3 → +7 → +8 → -27 → -1 → ?

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Answer: 1

SubType: number-chain
Start: 11
Steps: {"op":"+","operand":3}
{"op":"+","operand":7}
{"op":"+","operand":8}
{"op":"-","operand":27}
{"op":"-","operand":1}
Difficulty: hard

Number Chain: 3 → x3 → -6 → x5 → +3 → -3 → ?

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Answer: 15

SubType: number-chain
Start: 3
Steps: {"op":"x","operand":3}
{"op":"-","operand":6}
{"op":"x","operand":5}
{"op":"+","operand":3}
{"op":"-","operand":3}
Difficulty: hard

Number Chain: 12 → -3 → -3 → -2 → -1 → x2 → ?

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Answer: 6

SubType: number-chain
Start: 12
Steps: {"op":"-","operand":3}
{"op":"-","operand":3}
{"op":"-","operand":2}
{"op":"-","operand":1}
{"op":"x","operand":2}
Difficulty: hard

Number Chain: 7 → -4 → +9 → x3 → -5 → +9 → ?

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Answer: 40

SubType: number-chain
Start: 7
Steps: {"op":"-","operand":4}
{"op":"+","operand":9}
{"op":"x","operand":3}
{"op":"-","operand":5}
{"op":"+","operand":9}
Difficulty: hard

Number Chain: 11 → -10 → -1 → -1 → x2 → +5 → ?

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Answer: 3

SubType: number-chain
Start: 11
Steps: {"op":"-","operand":10}
{"op":"-","operand":1}
{"op":"-","operand":1}
{"op":"x","operand":2}
{"op":"+","operand":5}
Difficulty: hard

Number Chain: 4 → +7 → x2 → x4 → x5 → -208 → ?

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Answer: 232

SubType: number-chain
Start: 4
Steps: {"op":"+","operand":7}
{"op":"x","operand":2}
{"op":"x","operand":4}
{"op":"x","operand":5}
{"op":"-","operand":208}
Difficulty: hard

Number Chain: 5 → +2 → -3 → x4 → +3 → x3 → ?

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Answer: 57

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

Number Chain: 1 → x5 → -1 → -1 → -2 → -1 → ?

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

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