easy Set 9 Form Exercise

Start at 19. Follow the chain: -8, +9, -7. What is the result after step 2?

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Answer: 20

StartNumber
19
Steps
  • {"op":"-","value":8}
  • {"op":"+","value":9}
  • {"op":"-","value":7}
Values
  • 19
  • 11
  • 20
  • 13
MissingStep
1

Start at 16. Follow the chain: -2, +1, -9. What is the result after step 2?

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Answer: 15

StartNumber
16
Steps
  • {"op":"-","value":2}
  • {"op":"+","value":1}
  • {"op":"-","value":9}
Values
  • 16
  • 14
  • 15
  • 6
MissingStep
1

Start at 16. Follow the chain: +10, -1, +10. What is the result after step 1?

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Answer: 26

StartNumber
16
Steps
  • {"op":"+","value":10}
  • {"op":"-","value":1}
  • {"op":"+","value":10}
Values
  • 16
  • 26
  • 25
  • 35
MissingStep
0

Start at 15. Follow the chain: +8, -2, -8. What is the result after step 1?

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Answer: 23

StartNumber
15
Steps
  • {"op":"+","value":8}
  • {"op":"-","value":2}
  • {"op":"-","value":8}
Values
  • 15
  • 23
  • 21
  • 13
MissingStep
0

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

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Answer: 1

StartNumber
2
Steps
  • {"op":"-","value":1}
  • {"op":"+","value":3}
  • {"op":"+","value":9}
Values
  • 2
  • 1
  • 4
  • 13
MissingStep
0
Visual
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Start at 12. Follow the chain: -7, +3, +1. What is the result after step 2?

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Answer: 8

StartNumber
12
Steps
  • {"op":"-","value":7}
  • {"op":"+","value":3}
  • {"op":"+","value":1}
Values
  • 12
  • 5
  • 8
  • 9
MissingStep
1

Start at 2. Follow the chain: +10, +5, +8. What is the result after step 2?

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Answer: 17

StartNumber
2
Steps
  • {"op":"+","value":10}
  • {"op":"+","value":5}
  • {"op":"+","value":8}
Values
  • 2
  • 12
  • 17
  • 25
MissingStep
1
Visual
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Start at 8. Follow the chain: -4, +7, +10. What is the result after step 1?

Show answer

Answer: 4

StartNumber
8
Steps
  • {"op":"-","value":4}
  • {"op":"+","value":7}
  • {"op":"+","value":10}
Values
  • 8
  • 4
  • 11
  • 21
MissingStep
0
Visual
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