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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 647 · 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 59953 =
  2. 2.Digital root of 18 × 51 =
  3. 3.Digital root of 37 × 86 =
  4. 4.Digital root of 47906 =
  5. 5.Digital root of 35 × 78 =
  6. 6.Digital root of 36878 =
  7. 7.Digital root of 43 × 49 =
  8. 8.Digital root of 401 =
  9. 9.Digital root of 93 × 69 =
  10. 10.Digital root of 32692 =
  11. 11.Digital root of 51705 =
  12. 12.Digital root of 46035 =
  13. 13.Digital root of 54512 =
  14. 14.Digital root of 84559 =
  15. 15.Digital root of 28 × 45 =
  16. 16.Digital root of 35252 =
  17. 17.Digital root of 80450 =
  18. 18.Digital root of 67602 =
  19. 19.Digital root of 42604 =
  20. 20.Digital root of 29118 =
  21. 21.Digital root of 4161 =
  22. 22.Digital root of 72055 =
  23. 23.Digital root of 82172 =
  24. 24.Digital root of 18643 =
  25. 25.Digital root of 44 × 91 =
  26. 26.Digital root of 72070 =
  27. 27.Digital root of 14 × 24 =
  28. 28.Digital root of 85 × 15 =
  29. 29.Digital root of 96 × 45 =
  30. 30.Digital root of 69279 =
  31. 31.Digital root of 97 × 59 =
  32. 32.Digital root of 94 × 26 =
  33. 33.Digital root of 44480 =
  34. 34.Digital root of 59 × 68 =
  35. 35.Digital root of 98 × 63 =
  36. 36.Digital root of 53120 =
  37. 37.Digital root of 94 × 63 =
  38. 38.Digital root of 81338 =
  39. 39.Digital root of 14 × 22 =
  40. 40.Digital root of 16 × 68 =

Answer key

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

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