hard Set 8 Form Exercise

Start at 15. Follow the chain: ÷5, ×4, -10, ×5, ×5. What is the result after step 3?

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Answer: 2

StartNumber
15
Steps
  • {"op":"\u00f7","value":5}
  • {"op":"\u00d7","value":4}
  • {"op":"-","value":10}
  • {"op":"\u00d7","value":5}
  • {"op":"\u00d7","value":5}
Values
  • 15
  • 3
  • 12
  • 2
  • 10
  • 50
MissingStep
2

Start at 40. Follow the chain: ×2, ÷4, ÷5, -3, ×2. What is the result after step 2?

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Answer: 20

StartNumber
40
Steps
  • {"op":"\u00d7","value":2}
  • {"op":"\u00f7","value":4}
  • {"op":"\u00f7","value":5}
  • {"op":"-","value":3}
  • {"op":"\u00d7","value":2}
Values
  • 40
  • 80
  • 20
  • 4
  • 1
  • 2
MissingStep
1

Start at 10. Follow the chain: -9, ×3, ×4, -11, ×2. What is the result after step 5?

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Answer: 2

StartNumber
10
Steps
  • {"op":"-","value":9}
  • {"op":"\u00d7","value":3}
  • {"op":"\u00d7","value":4}
  • {"op":"-","value":11}
  • {"op":"\u00d7","value":2}
Values
  • 10
  • 1
  • 3
  • 12
  • 1
  • 2
MissingStep
4

Start at 42. Follow the chain: -15, ×4, -10, ÷7, ×4. What is the result after step 2?

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Answer: 108

StartNumber
42
Steps
  • {"op":"-","value":15}
  • {"op":"\u00d7","value":4}
  • {"op":"-","value":10}
  • {"op":"\u00f7","value":7}
  • {"op":"\u00d7","value":4}
Values
  • 42
  • 27
  • 108
  • 98
  • 14
  • 56
MissingStep
1

Start at 25. Follow the chain: ×5, ÷5, ×5, +7, +1. What is the result after step 5?

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Answer: 133

StartNumber
25
Steps
  • {"op":"\u00d7","value":5}
  • {"op":"\u00f7","value":5}
  • {"op":"\u00d7","value":5}
  • {"op":"+","value":7}
  • {"op":"+","value":1}
Values
  • 25
  • 125
  • 25
  • 125
  • 132
  • 133
MissingStep
4

Start at 30. Follow the chain: +12, ÷7, ÷3, -1, +20. What is the result after step 3?

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Answer: 2

StartNumber
30
Steps
  • {"op":"+","value":12}
  • {"op":"\u00f7","value":7}
  • {"op":"\u00f7","value":3}
  • {"op":"-","value":1}
  • {"op":"+","value":20}
Values
  • 30
  • 42
  • 6
  • 2
  • 1
  • 21
MissingStep
2

Start at 2. Follow the chain: -1, +13, +8, ×3, ÷2. What is the result after step 5?

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Answer: 33

StartNumber
2
Steps
  • {"op":"-","value":1}
  • {"op":"+","value":13}
  • {"op":"+","value":8}
  • {"op":"\u00d7","value":3}
  • {"op":"\u00f7","value":2}
Values
  • 2
  • 1
  • 14
  • 22
  • 66
  • 33
MissingStep
4

Start at 48. Follow the chain: ×4, +7, -10, -4, +5. What is the result after step 2?

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Answer: 199

StartNumber
48
Steps
  • {"op":"\u00d7","value":4}
  • {"op":"+","value":7}
  • {"op":"-","value":10}
  • {"op":"-","value":4}
  • {"op":"+","value":5}
Values
  • 48
  • 192
  • 199
  • 189
  • 185
  • 190
MissingStep
1