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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 459 · 40 sums
TalentJR

The trick (Gunita Samuccayah): Add the digits of a number; keep adding until one digit is left (a total of 9 stays 9). For a product, multiply the digital roots of the two numbers and take the digital root of that. If your answer’s digital root is different, the answer is wrong.

NameDateTime takenScore ___ / 40
  1. 1.Digital root of 81 × 29 =
  2. 2.Digital root of 29 × 25 =
  3. 3.Digital root of 24706 =
  4. 4.Digital root of 30 × 46 =
  5. 5.Digital root of 68884 =
  6. 6.Digital root of 82791 =
  7. 7.Digital root of 93638 =
  8. 8.Digital root of 69343 =
  9. 9.Digital root of 43941 =
  10. 10.Digital root of 17 × 12 =
  11. 11.Digital root of 26537 =
  12. 12.Digital root of 83914 =
  13. 13.Digital root of 31099 =
  14. 14.Digital root of 79 × 41 =
  15. 15.Digital root of 95705 =
  16. 16.Digital root of 90 × 27 =
  17. 17.Digital root of 72 × 54 =
  18. 18.Digital root of 89431 =
  19. 19.Digital root of 24485 =
  20. 20.Digital root of 22 × 36 =
  21. 21.Digital root of 51 × 61 =
  22. 22.Digital root of 89 × 53 =
  23. 23.Digital root of 87 × 67 =
  24. 24.Digital root of 49 × 42 =
  25. 25.Digital root of 70 × 25 =
  26. 26.Digital root of 48 × 65 =
  27. 27.Digital root of 65 × 48 =
  28. 28.Digital root of 19 × 28 =
  29. 29.Digital root of 42645 =
  30. 30.Digital root of 85681 =
  31. 31.Digital root of 37 × 99 =
  32. 32.Digital root of 25 × 31 =
  33. 33.Digital root of 18 × 49 =
  34. 34.Digital root of 45041 =
  35. 35.Digital root of 48 × 59 =
  36. 36.Digital root of 88238 =
  37. 37.Digital root of 14124 =
  38. 38.Digital root of 71475 =
  39. 39.Digital root of 86698 =
  40. 40.Digital root of 26 × 52 =

Answer key

  1. 9
  2. 5
  3. 1
  4. 3
  5. 7
  6. 9
  7. 2
  8. 7
  9. 3
  10. 6
  11. 5
  12. 7
  13. 4
  14. 8
  15. 8
  16. 9
  17. 9
  18. 7
  19. 5
  20. 9
  21. 6
  22. 1
  23. 6
  24. 6
  25. 4
  26. 6
  27. 6
  28. 1
  29. 3
  30. 1
  31. 9
  32. 1
  33. 9
  34. 5
  35. 6
  36. 2
  37. 3
  38. 6
  39. 1
  40. 2

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