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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 702 · 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 × 29 =
  2. 2.Digital root of 67321 =
  3. 3.Digital root of 24 × 99 =
  4. 4.Digital root of 28587 =
  5. 5.Digital root of 2017 =
  6. 6.Digital root of 24 × 52 =
  7. 7.Digital root of 15266 =
  8. 8.Digital root of 48554 =
  9. 9.Digital root of 7549 =
  10. 10.Digital root of 29716 =
  11. 11.Digital root of 38068 =
  12. 12.Digital root of 20474 =
  13. 13.Digital root of 21792 =
  14. 14.Digital root of 85959 =
  15. 15.Digital root of 39 × 54 =
  16. 16.Digital root of 20108 =
  17. 17.Digital root of 56 × 96 =
  18. 18.Digital root of 52 × 87 =
  19. 19.Digital root of 66 × 20 =
  20. 20.Digital root of 39678 =
  21. 21.Digital root of 71 × 86 =
  22. 22.Digital root of 81 × 17 =
  23. 23.Digital root of 93439 =
  24. 24.Digital root of 64 × 55 =
  25. 25.Digital root of 26 × 52 =
  26. 26.Digital root of 94059 =
  27. 27.Digital root of 66175 =
  28. 28.Digital root of 12 × 49 =
  29. 29.Digital root of 23020 =
  30. 30.Digital root of 34 × 98 =
  31. 31.Digital root of 80 × 37 =
  32. 32.Digital root of 77 × 19 =
  33. 33.Digital root of 40 × 77 =
  34. 34.Digital root of 1261 =
  35. 35.Digital root of 51 × 59 =
  36. 36.Digital root of 86206 =
  37. 37.Digital root of 14640 =
  38. 38.Digital root of 55553 =
  39. 39.Digital root of 31 × 66 =
  40. 40.Digital root of 1331 =

Answer key

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

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