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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 904 · 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 40 × 51 =
  2. 2.Digital root of 59893 =
  3. 3.Digital root of 39913 =
  4. 4.Digital root of 20976 =
  5. 5.Digital root of 10614 =
  6. 6.Digital root of 23681 =
  7. 7.Digital root of 68998 =
  8. 8.Digital root of 54 × 45 =
  9. 9.Digital root of 83 × 16 =
  10. 10.Digital root of 66302 =
  11. 11.Digital root of 67 × 46 =
  12. 12.Digital root of 74 × 82 =
  13. 13.Digital root of 30 × 27 =
  14. 14.Digital root of 77552 =
  15. 15.Digital root of 13 × 85 =
  16. 16.Digital root of 40 × 82 =
  17. 17.Digital root of 36 × 34 =
  18. 18.Digital root of 77 × 76 =
  19. 19.Digital root of 16 × 86 =
  20. 20.Digital root of 73 × 35 =
  21. 21.Digital root of 1910 =
  22. 22.Digital root of 2033 =
  23. 23.Digital root of 19 × 28 =
  24. 24.Digital root of 71120 =
  25. 25.Digital root of 72938 =
  26. 26.Digital root of 55191 =
  27. 27.Digital root of 21 × 35 =
  28. 28.Digital root of 67 × 24 =
  29. 29.Digital root of 4356 =
  30. 30.Digital root of 10645 =
  31. 31.Digital root of 39834 =
  32. 32.Digital root of 30944 =
  33. 33.Digital root of 77 × 64 =
  34. 34.Digital root of 89929 =
  35. 35.Digital root of 87 × 25 =
  36. 36.Digital root of 68 × 66 =
  37. 37.Digital root of 54037 =
  38. 38.Digital root of 23281 =
  39. 39.Digital root of 49695 =
  40. 40.Digital root of 41 × 51 =

Answer key

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

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