hard Set 7 Form Exercise

Start at 5. Follow the chain: ÷5, +9, ×3, +13, +1. What is the result after step 2?

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Answer: 10

StartNumber
5
Steps
  • {"op":"\u00f7","value":5}
  • {"op":"+","value":9}
  • {"op":"\u00d7","value":3}
  • {"op":"+","value":13}
  • {"op":"+","value":1}
Values
  • 5
  • 1
  • 10
  • 30
  • 43
  • 44
MissingStep
1

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

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Answer: 5

StartNumber
4
Steps
  • {"op":"\u00d7","value":2}
  • {"op":"-","value":4}
  • {"op":"\u00f7","value":4}
  • {"op":"+","value":4}
  • {"op":"\u00d7","value":4}
Values
  • 4
  • 8
  • 4
  • 1
  • 5
  • 20
MissingStep
3

Start at 17. Follow the chain: ×3, -8, -14, +19, -12. What is the result after step 4?

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Answer: 48

StartNumber
17
Steps
  • {"op":"\u00d7","value":3}
  • {"op":"-","value":8}
  • {"op":"-","value":14}
  • {"op":"+","value":19}
  • {"op":"-","value":12}
Values
  • 17
  • 51
  • 43
  • 29
  • 48
  • 36
MissingStep
3

Start at 17. Follow the chain: -2, ×3, ÷9, +4, -1. What is the result after step 1?

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Answer: 15

StartNumber
17
Steps
  • {"op":"-","value":2}
  • {"op":"\u00d7","value":3}
  • {"op":"\u00f7","value":9}
  • {"op":"+","value":4}
  • {"op":"-","value":1}
Values
  • 17
  • 15
  • 45
  • 5
  • 9
  • 8
MissingStep
0

Start at 19. Follow the chain: +8, ×2, +11, ÷5, +16. What is the result after step 3?

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Answer: 65

StartNumber
19
Steps
  • {"op":"+","value":8}
  • {"op":"\u00d7","value":2}
  • {"op":"+","value":11}
  • {"op":"\u00f7","value":5}
  • {"op":"+","value":16}
Values
  • 19
  • 27
  • 54
  • 65
  • 13
  • 29
MissingStep
2

Start at 13. Follow the chain: +13, ÷2, +2, +18, ÷3. What is the result after step 5?

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Answer: 11

StartNumber
13
Steps
  • {"op":"+","value":13}
  • {"op":"\u00f7","value":2}
  • {"op":"+","value":2}
  • {"op":"+","value":18}
  • {"op":"\u00f7","value":3}
Values
  • 13
  • 26
  • 13
  • 15
  • 33
  • 11
MissingStep
4

Start at 25. Follow the chain: -14, ×4, +1, ÷9, -2. What is the result after step 5?

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Answer: 3

StartNumber
25
Steps
  • {"op":"-","value":14}
  • {"op":"\u00d7","value":4}
  • {"op":"+","value":1}
  • {"op":"\u00f7","value":9}
  • {"op":"-","value":2}
Values
  • 25
  • 11
  • 44
  • 45
  • 5
  • 3
MissingStep
4

Start at 26. Follow the chain: ÷2, +17, ×5, -17, ÷7. What is the result after step 4?

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Answer: 133

StartNumber
26
Steps
  • {"op":"\u00f7","value":2}
  • {"op":"+","value":17}
  • {"op":"\u00d7","value":5}
  • {"op":"-","value":17}
  • {"op":"\u00f7","value":7}
Values
  • 26
  • 13
  • 30
  • 150
  • 133
  • 19
MissingStep
3