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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 136 · 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 35 × 51 =
  2. 2.Digital root of 79 × 34 =
  3. 3.Digital root of 43227 =
  4. 4.Digital root of 35 × 27 =
  5. 5.Digital root of 52320 =
  6. 6.Digital root of 99744 =
  7. 7.Digital root of 51 × 49 =
  8. 8.Digital root of 82457 =
  9. 9.Digital root of 78 × 51 =
  10. 10.Digital root of 62 × 45 =
  11. 11.Digital root of 79356 =
  12. 12.Digital root of 57 × 55 =
  13. 13.Digital root of 51395 =
  14. 14.Digital root of 62 × 92 =
  15. 15.Digital root of 81 × 29 =
  16. 16.Digital root of 78019 =
  17. 17.Digital root of 23 × 91 =
  18. 18.Digital root of 82609 =
  19. 19.Digital root of 66612 =
  20. 20.Digital root of 97610 =
  21. 21.Digital root of 96484 =
  22. 22.Digital root of 7155 =
  23. 23.Digital root of 7291 =
  24. 24.Digital root of 54584 =
  25. 25.Digital root of 16678 =
  26. 26.Digital root of 91 × 19 =
  27. 27.Digital root of 45445 =
  28. 28.Digital root of 22 × 82 =
  29. 29.Digital root of 40 × 66 =
  30. 30.Digital root of 53 × 46 =
  31. 31.Digital root of 22556 =
  32. 32.Digital root of 91 × 23 =
  33. 33.Digital root of 50 × 15 =
  34. 34.Digital root of 83759 =
  35. 35.Digital root of 51554 =
  36. 36.Digital root of 33 × 62 =
  37. 37.Digital root of 59 × 42 =
  38. 38.Digital root of 58 × 72 =
  39. 39.Digital root of 49189 =
  40. 40.Digital root of 88340 =

Answer key

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

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