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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 907 · 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 21 × 71 =
  2. 2.Digital root of 69 × 39 =
  3. 3.Digital root of 49087 =
  4. 4.Digital root of 80 × 86 =
  5. 5.Digital root of 67 × 68 =
  6. 6.Digital root of 39984 =
  7. 7.Digital root of 32476 =
  8. 8.Digital root of 41 × 70 =
  9. 9.Digital root of 39 × 49 =
  10. 10.Digital root of 49 × 45 =
  11. 11.Digital root of 30 × 65 =
  12. 12.Digital root of 44526 =
  13. 13.Digital root of 78855 =
  14. 14.Digital root of 48 × 64 =
  15. 15.Digital root of 51 × 90 =
  16. 16.Digital root of 73690 =
  17. 17.Digital root of 40 × 67 =
  18. 18.Digital root of 38358 =
  19. 19.Digital root of 48 × 99 =
  20. 20.Digital root of 15 × 22 =
  21. 21.Digital root of 36483 =
  22. 22.Digital root of 29 × 35 =
  23. 23.Digital root of 68451 =
  24. 24.Digital root of 26052 =
  25. 25.Digital root of 50446 =
  26. 26.Digital root of 22736 =
  27. 27.Digital root of 45 × 22 =
  28. 28.Digital root of 52308 =
  29. 29.Digital root of 77707 =
  30. 30.Digital root of 59 × 60 =
  31. 31.Digital root of 19 × 43 =
  32. 32.Digital root of 87550 =
  33. 33.Digital root of 47 × 76 =
  34. 34.Digital root of 29601 =
  35. 35.Digital root of 11836 =
  36. 36.Digital root of 33602 =
  37. 37.Digital root of 34 × 28 =
  38. 38.Digital root of 16923 =
  39. 39.Digital root of 92 × 44 =
  40. 40.Digital root of 21934 =

Answer key

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

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