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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 67 · 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 79 × 53 =
  2. 2.Digital root of 91089 =
  3. 3.Digital root of 18995 =
  4. 4.Digital root of 52 × 43 =
  5. 5.Digital root of 84108 =
  6. 6.Digital root of 87 × 70 =
  7. 7.Digital root of 26 × 32 =
  8. 8.Digital root of 30 × 96 =
  9. 9.Digital root of 75 × 23 =
  10. 10.Digital root of 21 × 18 =
  11. 11.Digital root of 65 × 89 =
  12. 12.Digital root of 83486 =
  13. 13.Digital root of 37 × 72 =
  14. 14.Digital root of 79 × 55 =
  15. 15.Digital root of 28883 =
  16. 16.Digital root of 16 × 17 =
  17. 17.Digital root of 72816 =
  18. 18.Digital root of 66618 =
  19. 19.Digital root of 46 × 68 =
  20. 20.Digital root of 61 × 84 =
  21. 21.Digital root of 33798 =
  22. 22.Digital root of 40 × 95 =
  23. 23.Digital root of 38648 =
  24. 24.Digital root of 58906 =
  25. 25.Digital root of 24374 =
  26. 26.Digital root of 68471 =
  27. 27.Digital root of 79 × 87 =
  28. 28.Digital root of 76 × 12 =
  29. 29.Digital root of 31526 =
  30. 30.Digital root of 42162 =
  31. 31.Digital root of 23070 =
  32. 32.Digital root of 46543 =
  33. 33.Digital root of 11617 =
  34. 34.Digital root of 33784 =
  35. 35.Digital root of 30279 =
  36. 36.Digital root of 28174 =
  37. 37.Digital root of 24102 =
  38. 38.Digital root of 56351 =
  39. 39.Digital root of 55 × 62 =
  40. 40.Digital root of 4198 =

Answer key

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

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