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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 942 · 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 43928 =
  2. 2.Digital root of 93 × 41 =
  3. 3.Digital root of 92 × 28 =
  4. 4.Digital root of 12821 =
  5. 5.Digital root of 53 × 13 =
  6. 6.Digital root of 81232 =
  7. 7.Digital root of 97356 =
  8. 8.Digital root of 13125 =
  9. 9.Digital root of 98408 =
  10. 10.Digital root of 32607 =
  11. 11.Digital root of 6368 =
  12. 12.Digital root of 74 × 79 =
  13. 13.Digital root of 61 × 28 =
  14. 14.Digital root of 33 × 18 =
  15. 15.Digital root of 33345 =
  16. 16.Digital root of 46 × 94 =
  17. 17.Digital root of 24 × 83 =
  18. 18.Digital root of 77384 =
  19. 19.Digital root of 52 × 99 =
  20. 20.Digital root of 81804 =
  21. 21.Digital root of 22917 =
  22. 22.Digital root of 52 × 91 =
  23. 23.Digital root of 81 × 15 =
  24. 24.Digital root of 74771 =
  25. 25.Digital root of 40149 =
  26. 26.Digital root of 16325 =
  27. 27.Digital root of 23497 =
  28. 28.Digital root of 37824 =
  29. 29.Digital root of 85471 =
  30. 30.Digital root of 80 × 47 =
  31. 31.Digital root of 85 × 18 =
  32. 32.Digital root of 17 × 58 =
  33. 33.Digital root of 56 × 42 =
  34. 34.Digital root of 52 × 73 =
  35. 35.Digital root of 42740 =
  36. 36.Digital root of 43248 =
  37. 37.Digital root of 91981 =
  38. 38.Digital root of 17240 =
  39. 39.Digital root of 30652 =
  40. 40.Digital root of 13885 =

Answer key

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

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