hard Set 9 Form Exercise

Start at 13. Follow the chain: ×4, ÷2, ×4, +11, -17. What is the result after step 5?

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Answer: 98

StartNumber
13
Steps
  • {"op":"\u00d7","value":4}
  • {"op":"\u00f7","value":2}
  • {"op":"\u00d7","value":4}
  • {"op":"+","value":11}
  • {"op":"-","value":17}
Values
  • 13
  • 52
  • 26
  • 104
  • 115
  • 98
MissingStep
4

Start at 8. Follow the chain: ÷8, ×2, -1, ×4, +10. What is the result after step 3?

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Answer: 1

StartNumber
8
Steps
  • {"op":"\u00f7","value":8}
  • {"op":"\u00d7","value":2}
  • {"op":"-","value":1}
  • {"op":"\u00d7","value":4}
  • {"op":"+","value":10}
Values
  • 8
  • 1
  • 2
  • 1
  • 4
  • 14
MissingStep
2

Start at 8. Follow the chain: -6, -1, ×5, -2, +13. What is the result after step 5?

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Answer: 16

StartNumber
8
Steps
  • {"op":"-","value":6}
  • {"op":"-","value":1}
  • {"op":"\u00d7","value":5}
  • {"op":"-","value":2}
  • {"op":"+","value":13}
Values
  • 8
  • 2
  • 1
  • 5
  • 3
  • 16
MissingStep
4

Start at 28. Follow the chain: ÷7, ×4, ×3, ÷3, ×4. What is the result after step 2?

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Answer: 16

StartNumber
28
Steps
  • {"op":"\u00f7","value":7}
  • {"op":"\u00d7","value":4}
  • {"op":"\u00d7","value":3}
  • {"op":"\u00f7","value":3}
  • {"op":"\u00d7","value":4}
Values
  • 28
  • 4
  • 16
  • 48
  • 16
  • 64
MissingStep
1

Start at 31. Follow the chain: -10, ×2, +2, +11, ÷5. What is the result after step 3?

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Answer: 44

StartNumber
31
Steps
  • {"op":"-","value":10}
  • {"op":"\u00d7","value":2}
  • {"op":"+","value":2}
  • {"op":"+","value":11}
  • {"op":"\u00f7","value":5}
Values
  • 31
  • 21
  • 42
  • 44
  • 55
  • 11
MissingStep
2

Start at 10. Follow the chain: +6, ×2, +13, +17, ÷2. What is the result after step 1?

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Answer: 16

StartNumber
10
Steps
  • {"op":"+","value":6}
  • {"op":"\u00d7","value":2}
  • {"op":"+","value":13}
  • {"op":"+","value":17}
  • {"op":"\u00f7","value":2}
Values
  • 10
  • 16
  • 32
  • 45
  • 62
  • 31
MissingStep
0

Start at 26. Follow the chain: +10, -5, -13, ÷2, -6. What is the result after step 1?

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Answer: 36

StartNumber
26
Steps
  • {"op":"+","value":10}
  • {"op":"-","value":5}
  • {"op":"-","value":13}
  • {"op":"\u00f7","value":2}
  • {"op":"-","value":6}
Values
  • 26
  • 36
  • 31
  • 18
  • 9
  • 3
MissingStep
0

Start at 48. Follow the chain: +4, ×3, ÷2, +13, -17. What is the result after step 4?

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Answer: 91

StartNumber
48
Steps
  • {"op":"+","value":4}
  • {"op":"\u00d7","value":3}
  • {"op":"\u00f7","value":2}
  • {"op":"+","value":13}
  • {"op":"-","value":17}
Values
  • 48
  • 52
  • 156
  • 78
  • 91
  • 74
MissingStep
3