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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 16 · 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 82291 =
  2. 2.Digital root of 81113 =
  3. 3.Digital root of 38784 =
  4. 4.Digital root of 91 × 87 =
  5. 5.Digital root of 13548 =
  6. 6.Digital root of 32188 =
  7. 7.Digital root of 25 × 67 =
  8. 8.Digital root of 24 × 68 =
  9. 9.Digital root of 33755 =
  10. 10.Digital root of 65504 =
  11. 11.Digital root of 76 × 12 =
  12. 12.Digital root of 8375 =
  13. 13.Digital root of 21052 =
  14. 14.Digital root of 62 × 86 =
  15. 15.Digital root of 96978 =
  16. 16.Digital root of 31910 =
  17. 17.Digital root of 42312 =
  18. 18.Digital root of 14 × 17 =
  19. 19.Digital root of 21 × 61 =
  20. 20.Digital root of 35500 =
  21. 21.Digital root of 62243 =
  22. 22.Digital root of 33 × 81 =
  23. 23.Digital root of 24 × 27 =
  24. 24.Digital root of 37 × 28 =
  25. 25.Digital root of 51917 =
  26. 26.Digital root of 33 × 61 =
  27. 27.Digital root of 59 × 88 =
  28. 28.Digital root of 85708 =
  29. 29.Digital root of 46391 =
  30. 30.Digital root of 38 × 32 =
  31. 31.Digital root of 20 × 51 =
  32. 32.Digital root of 5925 =
  33. 33.Digital root of 57865 =
  34. 34.Digital root of 28 × 51 =
  35. 35.Digital root of 38610 =
  36. 36.Digital root of 85434 =
  37. 37.Digital root of 56040 =
  38. 38.Digital root of 21346 =
  39. 39.Digital root of 58 × 63 =
  40. 40.Digital root of 82544 =

Answer key

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

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