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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 137 · 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 35 × 98 =
  2. 2.Digital root of 8773 =
  3. 3.Digital root of 79 × 16 =
  4. 4.Digital root of 37 × 28 =
  5. 5.Digital root of 64 × 81 =
  6. 6.Digital root of 95054 =
  7. 7.Digital root of 26 × 20 =
  8. 8.Digital root of 99 × 15 =
  9. 9.Digital root of 94266 =
  10. 10.Digital root of 23717 =
  11. 11.Digital root of 16 × 13 =
  12. 12.Digital root of 68748 =
  13. 13.Digital root of 24932 =
  14. 14.Digital root of 49532 =
  15. 15.Digital root of 83770 =
  16. 16.Digital root of 21 × 65 =
  17. 17.Digital root of 65363 =
  18. 18.Digital root of 84 × 28 =
  19. 19.Digital root of 13414 =
  20. 20.Digital root of 86 × 29 =
  21. 21.Digital root of 88 × 73 =
  22. 22.Digital root of 88977 =
  23. 23.Digital root of 25 × 75 =
  24. 24.Digital root of 44091 =
  25. 25.Digital root of 40342 =
  26. 26.Digital root of 85 × 81 =
  27. 27.Digital root of 82036 =
  28. 28.Digital root of 3514 =
  29. 29.Digital root of 34 × 91 =
  30. 30.Digital root of 74764 =
  31. 31.Digital root of 25 × 66 =
  32. 32.Digital root of 86 × 70 =
  33. 33.Digital root of 55579 =
  34. 34.Digital root of 20800 =
  35. 35.Digital root of 72 × 50 =
  36. 36.Digital root of 64 × 68 =
  37. 37.Digital root of 50281 =
  38. 38.Digital root of 38924 =
  39. 39.Digital root of 13 × 64 =
  40. 40.Digital root of 15 × 24 =

Answer key

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

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