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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 888 · 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 40 × 53 =
  2. 2.Digital root of 82663 =
  3. 3.Digital root of 563 =
  4. 4.Digital root of 51356 =
  5. 5.Digital root of 60 × 62 =
  6. 6.Digital root of 36 × 85 =
  7. 7.Digital root of 57468 =
  8. 8.Digital root of 42766 =
  9. 9.Digital root of 40660 =
  10. 10.Digital root of 98803 =
  11. 11.Digital root of 5343 =
  12. 12.Digital root of 18 × 69 =
  13. 13.Digital root of 20751 =
  14. 14.Digital root of 88257 =
  15. 15.Digital root of 12 × 22 =
  16. 16.Digital root of 51 × 27 =
  17. 17.Digital root of 71 × 91 =
  18. 18.Digital root of 39850 =
  19. 19.Digital root of 17 × 18 =
  20. 20.Digital root of 70 × 93 =
  21. 21.Digital root of 7070 =
  22. 22.Digital root of 33 × 61 =
  23. 23.Digital root of 36103 =
  24. 24.Digital root of 58 × 33 =
  25. 25.Digital root of 33 × 96 =
  26. 26.Digital root of 35 × 56 =
  27. 27.Digital root of 29071 =
  28. 28.Digital root of 94 × 41 =
  29. 29.Digital root of 13 × 83 =
  30. 30.Digital root of 18 × 84 =
  31. 31.Digital root of 57490 =
  32. 32.Digital root of 39951 =
  33. 33.Digital root of 88281 =
  34. 34.Digital root of 11823 =
  35. 35.Digital root of 33080 =
  36. 36.Digital root of 76 × 76 =
  37. 37.Digital root of 38 × 60 =
  38. 38.Digital root of 61673 =
  39. 39.Digital root of 34195 =
  40. 40.Digital root of 25339 =

Answer key

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

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