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Number patterns: Medium, sheet 1

12 patterns on one sheet, with the answers on the last page. Find the rule and write the next number.

Number patterns: Medium, sheet 1

Find the rule and write the next number.

  1. 5, 5, 10, 15, 25, 40, ?
  2. 5, 6, 11, 17, 28, 45, ?
  3. 5, 4, 9, 13, 22, 35, ?
  4. 5, 1, 6, 7, 13, 20, ?
  5. 4, 1, 5, 6, 11, 17, ?
  6. 1, 3, 4, 7, 11, 18, ?
  7. 6, 5, 11, 16, 27, 43, ?
  8. 2, 4, 6, 10, 16, 26, ?
  9. 3, 4, 7, 11, 18, 29, ?
  10. 2, 2, 4, 6, 10, 16, ?
  11. 3, 1, 4, 5, 9, 14, ?
  12. 2, 6, 8, 14, 22, 36, ?

Answers

  1. 65. Each term is the sum of the two before it: 25 + 40 = 65.
  2. 73. Each term is the sum of the two before it: 28 + 45 = 73.
  3. 57. Each term is the sum of the two before it: 22 + 35 = 57.
  4. 33. Each term is the sum of the two before it: 13 + 20 = 33.
  5. 28. Each term is the sum of the two before it: 11 + 17 = 28.
  6. 29. Each term is the sum of the two before it: 11 + 18 = 29.
  7. 70. Each term is the sum of the two before it: 27 + 43 = 70.
  8. 42. Each term is the sum of the two before it: 16 + 26 = 42.
  9. 47. Each term is the sum of the two before it: 18 + 29 = 47.
  10. 26. Each term is the sum of the two before it: 10 + 16 = 26.
  11. 23. Each term is the sum of the two before it: 9 + 14 = 23.
  12. 58. Each term is the sum of the two before it: 22 + 36 = 58.