Workbook Detail
Number Chain Patterns Hard — Set 9
Start at 21. Follow the chain: -2, +4, +13, -12, +17. What is the result after step 4?
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Answer: 24
- StartNumber
- 21
- Steps
- {"op":"-","value":2}
- {"op":"+","value":4}
- {"op":"+","value":13}
- {"op":"-","value":12}
- {"op":"+","value":17}
- Values
- 21
- 19
- 23
- 36
- 24
- 41
- MissingStep
- 3
Start at 12. Follow the chain: ×3, -18, +8, +1, ×3. What is the result after step 4?
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Answer: 27
- StartNumber
- 12
- Steps
- {"op":"\u00d7","value":3}
- {"op":"-","value":18}
- {"op":"+","value":8}
- {"op":"+","value":1}
- {"op":"\u00d7","value":3}
- Values
- 12
- 36
- 18
- 26
- 27
- 81
- MissingStep
- 3
Start at 30. Follow the chain: ×2, -6, -7, -12, ÷5. What is the result after step 4?
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Answer: 35
- StartNumber
- 30
- Steps
- {"op":"\u00d7","value":2}
- {"op":"-","value":6}
- {"op":"-","value":7}
- {"op":"-","value":12}
- {"op":"\u00f7","value":5}
- Values
- 30
- 60
- 54
- 47
- 35
- 7
- MissingStep
- 3
Start at 25. Follow the chain: ÷5, +7, ×3, ×4, +6. What is the result after step 2?
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Answer: 12
- StartNumber
- 25
- Steps
- {"op":"\u00f7","value":5}
- {"op":"+","value":7}
- {"op":"\u00d7","value":3}
- {"op":"\u00d7","value":4}
- {"op":"+","value":6}
- Values
- 25
- 5
- 12
- 36
- 144
- 150
- MissingStep
- 1
Start at 23. Follow the chain: +1, +11, +4, +12, ÷3. What is the result after step 5?
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Answer: 17
- StartNumber
- 23
- Steps
- {"op":"+","value":1}
- {"op":"+","value":11}
- {"op":"+","value":4}
- {"op":"+","value":12}
- {"op":"\u00f7","value":3}
- Values
- 23
- 24
- 35
- 39
- 51
- 17
- MissingStep
- 4
Start at 15. Follow the chain: ×4, -20, +6, ÷2, -4. What is the result after step 1?
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Answer: 60
- StartNumber
- 15
- Steps
- {"op":"\u00d7","value":4}
- {"op":"-","value":20}
- {"op":"+","value":6}
- {"op":"\u00f7","value":2}
- {"op":"-","value":4}
- Values
- 15
- 60
- 40
- 46
- 23
- 19
- MissingStep
- 0
Start at 25. Follow the chain: -13, ×3, ÷2, ÷9, ×3. What is the result after step 4?
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Answer: 2
- StartNumber
- 25
- Steps
- {"op":"-","value":13}
- {"op":"\u00d7","value":3}
- {"op":"\u00f7","value":2}
- {"op":"\u00f7","value":9}
- {"op":"\u00d7","value":3}
- Values
- 25
- 12
- 36
- 18
- 2
- 6
- MissingStep
- 3
Start at 20. Follow the chain: -3, -15, +8, ÷2, -1. What is the result after step 2?
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Answer: 2
- StartNumber
- 20
- Steps
- {"op":"-","value":3}
- {"op":"-","value":15}
- {"op":"+","value":8}
- {"op":"\u00f7","value":2}
- {"op":"-","value":1}
- Values
- 20
- 17
- 2
- 10
- 5
- 4
- MissingStep
- 1
Teaching Notes
Practice number chain patterns with free hard printable worksheets. Uniquely generated — reinforce key math skills.
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