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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 458 · 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 82 × 65 =
  2. 2.Digital root of 87 × 55 =
  3. 3.Digital root of 17951 =
  4. 4.Digital root of 43669 =
  5. 5.Digital root of 55 × 16 =
  6. 6.Digital root of 62 × 50 =
  7. 7.Digital root of 95 × 29 =
  8. 8.Digital root of 29115 =
  9. 9.Digital root of 33 × 97 =
  10. 10.Digital root of 50 × 20 =
  11. 11.Digital root of 45352 =
  12. 12.Digital root of 36835 =
  13. 13.Digital root of 75460 =
  14. 14.Digital root of 40351 =
  15. 15.Digital root of 1766 =
  16. 16.Digital root of 65 × 97 =
  17. 17.Digital root of 48437 =
  18. 18.Digital root of 77708 =
  19. 19.Digital root of 30 × 29 =
  20. 20.Digital root of 58 × 87 =
  21. 21.Digital root of 99 × 84 =
  22. 22.Digital root of 75436 =
  23. 23.Digital root of 20446 =
  24. 24.Digital root of 73 × 27 =
  25. 25.Digital root of 52622 =
  26. 26.Digital root of 60 × 90 =
  27. 27.Digital root of 49773 =
  28. 28.Digital root of 47 × 78 =
  29. 29.Digital root of 2234 =
  30. 30.Digital root of 30 × 49 =
  31. 31.Digital root of 27892 =
  32. 32.Digital root of 72679 =
  33. 33.Digital root of 88 × 90 =
  34. 34.Digital root of 79174 =
  35. 35.Digital root of 83 × 97 =
  36. 36.Digital root of 69 × 30 =
  37. 37.Digital root of 6314 =
  38. 38.Digital root of 97769 =
  39. 39.Digital root of 91544 =
  40. 40.Digital root of 66367 =

Answer key

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

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