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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 593 · 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 69255 =
  2. 2.Digital root of 87703 =
  3. 3.Digital root of 67 × 35 =
  4. 4.Digital root of 96995 =
  5. 5.Digital root of 11414 =
  6. 6.Digital root of 31478 =
  7. 7.Digital root of 23 × 52 =
  8. 8.Digital root of 42282 =
  9. 9.Digital root of 63 × 77 =
  10. 10.Digital root of 67 × 51 =
  11. 11.Digital root of 92 × 24 =
  12. 12.Digital root of 79 × 58 =
  13. 13.Digital root of 19759 =
  14. 14.Digital root of 97 × 15 =
  15. 15.Digital root of 2819 =
  16. 16.Digital root of 13 × 70 =
  17. 17.Digital root of 48 × 29 =
  18. 18.Digital root of 22205 =
  19. 19.Digital root of 18758 =
  20. 20.Digital root of 85 × 77 =
  21. 21.Digital root of 53 × 50 =
  22. 22.Digital root of 3696 =
  23. 23.Digital root of 75 × 25 =
  24. 24.Digital root of 36 × 21 =
  25. 25.Digital root of 570 =
  26. 26.Digital root of 94 × 44 =
  27. 27.Digital root of 49 × 79 =
  28. 28.Digital root of 12 × 67 =
  29. 29.Digital root of 76142 =
  30. 30.Digital root of 47 × 47 =
  31. 31.Digital root of 20473 =
  32. 32.Digital root of 77 × 86 =
  33. 33.Digital root of 40518 =
  34. 34.Digital root of 54972 =
  35. 35.Digital root of 85023 =
  36. 36.Digital root of 87333 =
  37. 37.Digital root of 12144 =
  38. 38.Digital root of 46751 =
  39. 39.Digital root of 59 × 82 =
  40. 40.Digital root of 2974 =

Answer key

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

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