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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 299 · 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 17 × 57 =
  2. 2.Digital root of 19 × 75 =
  3. 3.Digital root of 46186 =
  4. 4.Digital root of 52264 =
  5. 5.Digital root of 50 × 14 =
  6. 6.Digital root of 21396 =
  7. 7.Digital root of 80995 =
  8. 8.Digital root of 70 × 50 =
  9. 9.Digital root of 21 × 56 =
  10. 10.Digital root of 28625 =
  11. 11.Digital root of 64 × 66 =
  12. 12.Digital root of 81640 =
  13. 13.Digital root of 59 × 61 =
  14. 14.Digital root of 19088 =
  15. 15.Digital root of 52 × 88 =
  16. 16.Digital root of 91 × 76 =
  17. 17.Digital root of 50 × 25 =
  18. 18.Digital root of 14883 =
  19. 19.Digital root of 73 × 16 =
  20. 20.Digital root of 36245 =
  21. 21.Digital root of 53194 =
  22. 22.Digital root of 39 × 16 =
  23. 23.Digital root of 75 × 71 =
  24. 24.Digital root of 44 × 91 =
  25. 25.Digital root of 78411 =
  26. 26.Digital root of 22271 =
  27. 27.Digital root of 32222 =
  28. 28.Digital root of 31452 =
  29. 29.Digital root of 45 × 15 =
  30. 30.Digital root of 55411 =
  31. 31.Digital root of 63 × 79 =
  32. 32.Digital root of 94197 =
  33. 33.Digital root of 94390 =
  34. 34.Digital root of 650 =
  35. 35.Digital root of 56 × 67 =
  36. 36.Digital root of 13055 =
  37. 37.Digital root of 41 × 12 =
  38. 38.Digital root of 61085 =
  39. 39.Digital root of 42699 =
  40. 40.Digital root of 69483 =

Answer key

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

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