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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 566 · 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 13 × 45 =
  2. 2.Digital root of 92 × 43 =
  3. 3.Digital root of 99591 =
  4. 4.Digital root of 30 × 83 =
  5. 5.Digital root of 65 × 40 =
  6. 6.Digital root of 84864 =
  7. 7.Digital root of 37 × 18 =
  8. 8.Digital root of 35210 =
  9. 9.Digital root of 83770 =
  10. 10.Digital root of 32 × 20 =
  11. 11.Digital root of 25 × 16 =
  12. 12.Digital root of 7162 =
  13. 13.Digital root of 42582 =
  14. 14.Digital root of 21 × 83 =
  15. 15.Digital root of 89 × 22 =
  16. 16.Digital root of 21195 =
  17. 17.Digital root of 34 × 60 =
  18. 18.Digital root of 36 × 50 =
  19. 19.Digital root of 88 × 13 =
  20. 20.Digital root of 28 × 79 =
  21. 21.Digital root of 97105 =
  22. 22.Digital root of 77 × 93 =
  23. 23.Digital root of 26 × 64 =
  24. 24.Digital root of 68988 =
  25. 25.Digital root of 11359 =
  26. 26.Digital root of 42 × 84 =
  27. 27.Digital root of 71956 =
  28. 28.Digital root of 19 × 16 =
  29. 29.Digital root of 25 × 69 =
  30. 30.Digital root of 57471 =
  31. 31.Digital root of 18053 =
  32. 32.Digital root of 81 × 53 =
  33. 33.Digital root of 92364 =
  34. 34.Digital root of 79505 =
  35. 35.Digital root of 1418 =
  36. 36.Digital root of 18036 =
  37. 37.Digital root of 36 × 67 =
  38. 38.Digital root of 13 × 92 =
  39. 39.Digital root of 30752 =
  40. 40.Digital root of 89521 =

Answer key

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

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