Workbook Detail

Number Chain Mixed Hard — Set 13

Arithmetic B

hard Set 13 Form Exercise

Number Chain: 8 → -6 → -1 → x3 → -2 → -1 → ?

SubType: number-chain
Start: 8
Steps: {"op":"-","operand":6}
{"op":"-","operand":1}
{"op":"x","operand":3}
{"op":"-","operand":2}
{"op":"-","operand":1}
Difficulty: hard

Number Chain: 7 → x2 → -12 → x5 → x2 → x5 → ?

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Answer: 100

SubType: number-chain
Start: 7
Steps: {"op":"x","operand":2}
{"op":"-","operand":12}
{"op":"x","operand":5}
{"op":"x","operand":2}
{"op":"x","operand":5}
Difficulty: hard

Number Chain: 10 → -7 → x2 → x5 → +1 → x4 → ?

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Answer: 124

SubType: number-chain
Start: 10
Steps: {"op":"-","operand":7}
{"op":"x","operand":2}
{"op":"x","operand":5}
{"op":"+","operand":1}
{"op":"x","operand":4}
Difficulty: hard

Number Chain: 1 → x2 → +11 → x4 → x2 → x4 → ?

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Answer: 416

SubType: number-chain
Start: 1
Steps: {"op":"x","operand":2}
{"op":"+","operand":11}
{"op":"x","operand":4}
{"op":"x","operand":2}
{"op":"x","operand":4}
Difficulty: hard

Number Chain: 11 → -9 → x5 → +8 → x4 → +5 → ?

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Answer: 77

SubType: number-chain
Start: 11
Steps: {"op":"-","operand":9}
{"op":"x","operand":5}
{"op":"+","operand":8}
{"op":"x","operand":4}
{"op":"+","operand":5}
Difficulty: hard

Number Chain: 9 → -3 → -5 → x2 → x3 → +9 → ?

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Answer: 15

SubType: number-chain
Start: 9
Steps: {"op":"-","operand":3}
{"op":"-","operand":5}
{"op":"x","operand":2}
{"op":"x","operand":3}
{"op":"+","operand":9}
Difficulty: hard

Number Chain: 10 → +4 → -13 → +11 → x5 → -38 → ?

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Answer: 22

SubType: number-chain
Start: 10
Steps: {"op":"+","operand":4}
{"op":"-","operand":13}
{"op":"+","operand":11}
{"op":"x","operand":5}
{"op":"-","operand":38}
Difficulty: hard

Number Chain: 12 → -3 → +4 → x2 → -25 → -1 → ?

SubType: number-chain
Start: 12
Steps: {"op":"-","operand":3}
{"op":"+","operand":4}
{"op":"x","operand":2}
{"op":"-","operand":25}
{"op":"-","operand":1}
Difficulty: hard

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