hard Set 10 Form Exercise

Start at 34. Follow the chain: ×5, -9, ÷7, -9, ×4. What is the result after step 4?

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Answer: 14

StartNumber
34
Steps
  • {"op":"\u00d7","value":5}
  • {"op":"-","value":9}
  • {"op":"\u00f7","value":7}
  • {"op":"-","value":9}
  • {"op":"\u00d7","value":4}
Values
  • 34
  • 170
  • 161
  • 23
  • 14
  • 56
MissingStep
3

Start at 13. Follow the chain: +13, +14, ÷4, ÷5, ÷2. What is the result after step 4?

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Answer: 2

StartNumber
13
Steps
  • {"op":"+","value":13}
  • {"op":"+","value":14}
  • {"op":"\u00f7","value":4}
  • {"op":"\u00f7","value":5}
  • {"op":"\u00f7","value":2}
Values
  • 13
  • 26
  • 40
  • 10
  • 2
  • 1
MissingStep
3

Start at 33. Follow the chain: ×3, ÷3, ×4, ÷6, -3. What is the result after step 1?

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Answer: 99

StartNumber
33
Steps
  • {"op":"\u00d7","value":3}
  • {"op":"\u00f7","value":3}
  • {"op":"\u00d7","value":4}
  • {"op":"\u00f7","value":6}
  • {"op":"-","value":3}
Values
  • 33
  • 99
  • 33
  • 132
  • 22
  • 19
MissingStep
0

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

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Answer: 20

StartNumber
10
Steps
  • {"op":"\u00d7","value":4}
  • {"op":"\u00d7","value":5}
  • {"op":"\u00f7","value":5}
  • {"op":"\u00f7","value":2}
  • {"op":"-","value":2}
Values
  • 10
  • 40
  • 200
  • 40
  • 20
  • 18
MissingStep
3

Start at 15. Follow the chain: +1, +18, +3, ×4, +20. What is the result after step 1?

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Answer: 16

StartNumber
15
Steps
  • {"op":"+","value":1}
  • {"op":"+","value":18}
  • {"op":"+","value":3}
  • {"op":"\u00d7","value":4}
  • {"op":"+","value":20}
Values
  • 15
  • 16
  • 34
  • 37
  • 148
  • 168
MissingStep
0

Start at 19. Follow the chain: -17, -1, +4, +17, -6. What is the result after step 4?

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Answer: 22

StartNumber
19
Steps
  • {"op":"-","value":17}
  • {"op":"-","value":1}
  • {"op":"+","value":4}
  • {"op":"+","value":17}
  • {"op":"-","value":6}
Values
  • 19
  • 2
  • 1
  • 5
  • 22
  • 16
MissingStep
3

Start at 34. Follow the chain: +16, ÷5, +11, ×3, -7. What is the result after step 4?

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Answer: 63

StartNumber
34
Steps
  • {"op":"+","value":16}
  • {"op":"\u00f7","value":5}
  • {"op":"+","value":11}
  • {"op":"\u00d7","value":3}
  • {"op":"-","value":7}
Values
  • 34
  • 50
  • 10
  • 21
  • 63
  • 56
MissingStep
3

Start at 42. Follow the chain: ÷7, ×4, -7, -7, ÷2. What is the result after step 1?

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Answer: 6

StartNumber
42
Steps
  • {"op":"\u00f7","value":7}
  • {"op":"\u00d7","value":4}
  • {"op":"-","value":7}
  • {"op":"-","value":7}
  • {"op":"\u00f7","value":2}
Values
  • 42
  • 6
  • 24
  • 17
  • 10
  • 5
MissingStep
0