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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 832 · 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 5540 =
  2. 2.Digital root of 66881 =
  3. 3.Digital root of 10944 =
  4. 4.Digital root of 27959 =
  5. 5.Digital root of 56 × 31 =
  6. 6.Digital root of 79634 =
  7. 7.Digital root of 19 × 74 =
  8. 8.Digital root of 18 × 18 =
  9. 9.Digital root of 81 × 36 =
  10. 10.Digital root of 40 × 77 =
  11. 11.Digital root of 83 × 38 =
  12. 12.Digital root of 51213 =
  13. 13.Digital root of 32874 =
  14. 14.Digital root of 59241 =
  15. 15.Digital root of 83361 =
  16. 16.Digital root of 2469 =
  17. 17.Digital root of 99938 =
  18. 18.Digital root of 17378 =
  19. 19.Digital root of 49950 =
  20. 20.Digital root of 33633 =
  21. 21.Digital root of 23 × 44 =
  22. 22.Digital root of 18520 =
  23. 23.Digital root of 21592 =
  24. 24.Digital root of 14 × 86 =
  25. 25.Digital root of 17 × 37 =
  26. 26.Digital root of 91 × 57 =
  27. 27.Digital root of 53 × 86 =
  28. 28.Digital root of 37 × 97 =
  29. 29.Digital root of 26 × 78 =
  30. 30.Digital root of 95 × 32 =
  31. 31.Digital root of 56 × 90 =
  32. 32.Digital root of 41 × 68 =
  33. 33.Digital root of 76012 =
  34. 34.Digital root of 63 × 51 =
  35. 35.Digital root of 1883 =
  36. 36.Digital root of 95859 =
  37. 37.Digital root of 37 × 64 =
  38. 38.Digital root of 40983 =
  39. 39.Digital root of 13 × 91 =
  40. 40.Digital root of 12207 =

Answer key

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

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