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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 979 · 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 91498 =
  2. 2.Digital root of 23 × 28 =
  3. 3.Digital root of 24 × 24 =
  4. 4.Digital root of 75148 =
  5. 5.Digital root of 13883 =
  6. 6.Digital root of 73 × 70 =
  7. 7.Digital root of 85 × 22 =
  8. 8.Digital root of 98 × 14 =
  9. 9.Digital root of 30348 =
  10. 10.Digital root of 88 × 30 =
  11. 11.Digital root of 19919 =
  12. 12.Digital root of 88816 =
  13. 13.Digital root of 10250 =
  14. 14.Digital root of 79454 =
  15. 15.Digital root of 19 × 59 =
  16. 16.Digital root of 66043 =
  17. 17.Digital root of 64660 =
  18. 18.Digital root of 95 × 89 =
  19. 19.Digital root of 71098 =
  20. 20.Digital root of 62 × 65 =
  21. 21.Digital root of 58761 =
  22. 22.Digital root of 19 × 24 =
  23. 23.Digital root of 70 × 66 =
  24. 24.Digital root of 77 × 71 =
  25. 25.Digital root of 28476 =
  26. 26.Digital root of 28 × 45 =
  27. 27.Digital root of 44 × 81 =
  28. 28.Digital root of 11962 =
  29. 29.Digital root of 87 × 99 =
  30. 30.Digital root of 3835 =
  31. 31.Digital root of 46001 =
  32. 32.Digital root of 14907 =
  33. 33.Digital root of 20111 =
  34. 34.Digital root of 76 × 14 =
  35. 35.Digital root of 47836 =
  36. 36.Digital root of 68398 =
  37. 37.Digital root of 80 × 47 =
  38. 38.Digital root of 11430 =
  39. 39.Digital root of 62785 =
  40. 40.Digital root of 96650 =

Answer key

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

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