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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 736 · 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 52812 =
  2. 2.Digital root of 24 × 50 =
  3. 3.Digital root of 53773 =
  4. 4.Digital root of 87107 =
  5. 5.Digital root of 18 × 31 =
  6. 6.Digital root of 33 × 31 =
  7. 7.Digital root of 64 × 46 =
  8. 8.Digital root of 33970 =
  9. 9.Digital root of 105 =
  10. 10.Digital root of 30 × 68 =
  11. 11.Digital root of 35 × 58 =
  12. 12.Digital root of 4503 =
  13. 13.Digital root of 82 × 62 =
  14. 14.Digital root of 43 × 18 =
  15. 15.Digital root of 14402 =
  16. 16.Digital root of 7096 =
  17. 17.Digital root of 30 × 24 =
  18. 18.Digital root of 97524 =
  19. 19.Digital root of 12792 =
  20. 20.Digital root of 37478 =
  21. 21.Digital root of 34 × 29 =
  22. 22.Digital root of 60 × 47 =
  23. 23.Digital root of 23190 =
  24. 24.Digital root of 90478 =
  25. 25.Digital root of 24948 =
  26. 26.Digital root of 74 × 52 =
  27. 27.Digital root of 16 × 78 =
  28. 28.Digital root of 20 × 32 =
  29. 29.Digital root of 99355 =
  30. 30.Digital root of 45996 =
  31. 31.Digital root of 87970 =
  32. 32.Digital root of 80 × 40 =
  33. 33.Digital root of 23777 =
  34. 34.Digital root of 73737 =
  35. 35.Digital root of 29 × 52 =
  36. 36.Digital root of 33931 =
  37. 37.Digital root of 33 × 51 =
  38. 38.Digital root of 25 × 33 =
  39. 39.Digital root of 85880 =
  40. 40.Digital root of 38461 =

Answer key

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

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