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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 630 · 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 83 × 35 =
  2. 2.Digital root of 5959 =
  3. 3.Digital root of 31 × 53 =
  4. 4.Digital root of 89 × 82 =
  5. 5.Digital root of 13169 =
  6. 6.Digital root of 65 × 53 =
  7. 7.Digital root of 90 × 56 =
  8. 8.Digital root of 51625 =
  9. 9.Digital root of 86368 =
  10. 10.Digital root of 59175 =
  11. 11.Digital root of 83550 =
  12. 12.Digital root of 70366 =
  13. 13.Digital root of 45 × 14 =
  14. 14.Digital root of 53541 =
  15. 15.Digital root of 20 × 41 =
  16. 16.Digital root of 7110 =
  17. 17.Digital root of 67298 =
  18. 18.Digital root of 59 × 16 =
  19. 19.Digital root of 10287 =
  20. 20.Digital root of 38 × 33 =
  21. 21.Digital root of 90 × 39 =
  22. 22.Digital root of 99 × 79 =
  23. 23.Digital root of 66180 =
  24. 24.Digital root of 26262 =
  25. 25.Digital root of 70 × 21 =
  26. 26.Digital root of 97 × 31 =
  27. 27.Digital root of 63064 =
  28. 28.Digital root of 69 × 22 =
  29. 29.Digital root of 94 × 14 =
  30. 30.Digital root of 18816 =
  31. 31.Digital root of 49 × 51 =
  32. 32.Digital root of 45447 =
  33. 33.Digital root of 6287 =
  34. 34.Digital root of 43258 =
  35. 35.Digital root of 89095 =
  36. 36.Digital root of 45266 =
  37. 37.Digital root of 57499 =
  38. 38.Digital root of 86029 =
  39. 39.Digital root of 41 × 51 =
  40. 40.Digital root of 11327 =

Answer key

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

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