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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 266 · 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 28131 =
  2. 2.Digital root of 40 × 48 =
  3. 3.Digital root of 71623 =
  4. 4.Digital root of 16 × 48 =
  5. 5.Digital root of 48 × 99 =
  6. 6.Digital root of 44592 =
  7. 7.Digital root of 83919 =
  8. 8.Digital root of 72 × 65 =
  9. 9.Digital root of 58 × 65 =
  10. 10.Digital root of 71160 =
  11. 11.Digital root of 83 × 70 =
  12. 12.Digital root of 88 × 21 =
  13. 13.Digital root of 87 × 56 =
  14. 14.Digital root of 78 × 30 =
  15. 15.Digital root of 99 × 32 =
  16. 16.Digital root of 55448 =
  17. 17.Digital root of 24 × 93 =
  18. 18.Digital root of 84 × 29 =
  19. 19.Digital root of 50 × 56 =
  20. 20.Digital root of 40 × 92 =
  21. 21.Digital root of 12 × 81 =
  22. 22.Digital root of 36 × 37 =
  23. 23.Digital root of 55 × 83 =
  24. 24.Digital root of 71280 =
  25. 25.Digital root of 56901 =
  26. 26.Digital root of 97 × 83 =
  27. 27.Digital root of 50736 =
  28. 28.Digital root of 26 × 92 =
  29. 29.Digital root of 58029 =
  30. 30.Digital root of 80835 =
  31. 31.Digital root of 34 × 21 =
  32. 32.Digital root of 51001 =
  33. 33.Digital root of 49 × 32 =
  34. 34.Digital root of 31748 =
  35. 35.Digital root of 31 × 83 =
  36. 36.Digital root of 24497 =
  37. 37.Digital root of 73614 =
  38. 38.Digital root of 5649 =
  39. 39.Digital root of 35 × 97 =
  40. 40.Digital root of 74147 =

Answer key

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

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