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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 281 · 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 23155 =
  2. 2.Digital root of 45 × 99 =
  3. 3.Digital root of 26 × 78 =
  4. 4.Digital root of 69833 =
  5. 5.Digital root of 32 × 27 =
  6. 6.Digital root of 70 × 81 =
  7. 7.Digital root of 76 × 17 =
  8. 8.Digital root of 71771 =
  9. 9.Digital root of 89 × 17 =
  10. 10.Digital root of 47310 =
  11. 11.Digital root of 2500 =
  12. 12.Digital root of 23 × 84 =
  13. 13.Digital root of 18 × 40 =
  14. 14.Digital root of 12 × 41 =
  15. 15.Digital root of 20 × 94 =
  16. 16.Digital root of 43 × 88 =
  17. 17.Digital root of 67204 =
  18. 18.Digital root of 82 × 84 =
  19. 19.Digital root of 43881 =
  20. 20.Digital root of 64 × 30 =
  21. 21.Digital root of 29 × 17 =
  22. 22.Digital root of 98 × 55 =
  23. 23.Digital root of 93 × 64 =
  24. 24.Digital root of 83319 =
  25. 25.Digital root of 52 × 58 =
  26. 26.Digital root of 50 × 12 =
  27. 27.Digital root of 80 × 61 =
  28. 28.Digital root of 93435 =
  29. 29.Digital root of 53341 =
  30. 30.Digital root of 50711 =
  31. 31.Digital root of 71 × 50 =
  32. 32.Digital root of 46856 =
  33. 33.Digital root of 44757 =
  34. 34.Digital root of 12 × 86 =
  35. 35.Digital root of 28933 =
  36. 36.Digital root of 45678 =
  37. 37.Digital root of 65 × 95 =
  38. 38.Digital root of 56496 =
  39. 39.Digital root of 47 × 62 =
  40. 40.Digital root of 57076 =

Answer key

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

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