Workbook Detail

Number Chain Patterns Hard — Set 42

Arithmetic B

hard Set 42 Form Exercise

Number Chain: 8 → -1 → x2 → x2 → +10 → +9 → ?

Show answer

Answer: 47

SubType: number-chain
Start: 8
Steps: {"op":"-","operand":1}
{"op":"x","operand":2}
{"op":"x","operand":2}
{"op":"+","operand":10}
{"op":"+","operand":9}
Difficulty: hard

Number Chain: 11 → -10 → -1 → +12 → -11 → -1 → ?

SubType: number-chain
Start: 11
Steps: {"op":"-","operand":10}
{"op":"-","operand":1}
{"op":"+","operand":12}
{"op":"-","operand":11}
{"op":"-","operand":1}
Difficulty: hard

Number Chain: 11 → +5 → +2 → x3 → +9 → +8 → ?

Show answer

Answer: 71

SubType: number-chain
Start: 11
Steps: {"op":"+","operand":5}
{"op":"+","operand":2}
{"op":"x","operand":3}
{"op":"+","operand":9}
{"op":"+","operand":8}
Difficulty: hard

Number Chain: 1 → x3 → x2 → +7 → -9 → +12 → ?

Show answer

Answer: 16

SubType: number-chain
Start: 1
Steps: {"op":"x","operand":3}
{"op":"x","operand":2}
{"op":"+","operand":7}
{"op":"-","operand":9}
{"op":"+","operand":12}
Difficulty: hard

Number Chain: 6 → -3 → x5 → +2 → x5 → x3 → ?

Show answer

Answer: 255

SubType: number-chain
Start: 6
Steps: {"op":"-","operand":3}
{"op":"x","operand":5}
{"op":"+","operand":2}
{"op":"x","operand":5}
{"op":"x","operand":3}
Difficulty: hard

Number Chain: 7 → -3 → +1 → -3 → x4 → x2 → ?

Show answer

Answer: 16

SubType: number-chain
Start: 7
Steps: {"op":"-","operand":3}
{"op":"+","operand":1}
{"op":"-","operand":3}
{"op":"x","operand":4}
{"op":"x","operand":2}
Difficulty: hard

Number Chain: 1 → +8 → -3 → -5 → +7 → -7 → ?

Show answer

Answer: 1

SubType: number-chain
Start: 1
Steps: {"op":"+","operand":8}
{"op":"-","operand":3}
{"op":"-","operand":5}
{"op":"+","operand":7}
{"op":"-","operand":7}
Difficulty: hard

Number Chain: 8 → -5 → -1 → -1 → -1 → x4 → ?

SubType: number-chain
Start: 8
Steps: {"op":"-","operand":5}
{"op":"-","operand":1}
{"op":"-","operand":1}
{"op":"-","operand":1}
{"op":"x","operand":4}
Difficulty: hard

← More Arithmetic