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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 465 · 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 37 × 83 =
  2. 2.Digital root of 81206 =
  3. 3.Digital root of 46 × 52 =
  4. 4.Digital root of 25354 =
  5. 5.Digital root of 55468 =
  6. 6.Digital root of 92993 =
  7. 7.Digital root of 30307 =
  8. 8.Digital root of 35602 =
  9. 9.Digital root of 41 × 20 =
  10. 10.Digital root of 25 × 16 =
  11. 11.Digital root of 61 × 52 =
  12. 12.Digital root of 85 × 45 =
  13. 13.Digital root of 44 × 33 =
  14. 14.Digital root of 69587 =
  15. 15.Digital root of 29074 =
  16. 16.Digital root of 48544 =
  17. 17.Digital root of 54834 =
  18. 18.Digital root of 56320 =
  19. 19.Digital root of 40 × 39 =
  20. 20.Digital root of 61 × 86 =
  21. 21.Digital root of 91139 =
  22. 22.Digital root of 20962 =
  23. 23.Digital root of 13022 =
  24. 24.Digital root of 91981 =
  25. 25.Digital root of 16577 =
  26. 26.Digital root of 36761 =
  27. 27.Digital root of 94 × 80 =
  28. 28.Digital root of 51921 =
  29. 29.Digital root of 38 × 53 =
  30. 30.Digital root of 2668 =
  31. 31.Digital root of 18 × 25 =
  32. 32.Digital root of 96 × 20 =
  33. 33.Digital root of 25 × 81 =
  34. 34.Digital root of 95 × 25 =
  35. 35.Digital root of 28790 =
  36. 36.Digital root of 80814 =
  37. 37.Digital root of 27 × 63 =
  38. 38.Digital root of 87475 =
  39. 39.Digital root of 65256 =
  40. 40.Digital root of 83 × 15 =

Answer key

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

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