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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 200 · 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 41 × 80 =
  2. 2.Digital root of 50 × 93 =
  3. 3.Digital root of 25 × 89 =
  4. 4.Digital root of 54 × 49 =
  5. 5.Digital root of 86900 =
  6. 6.Digital root of 80214 =
  7. 7.Digital root of 7751 =
  8. 8.Digital root of 29034 =
  9. 9.Digital root of 45 × 65 =
  10. 10.Digital root of 74 × 61 =
  11. 11.Digital root of 50 × 31 =
  12. 12.Digital root of 29726 =
  13. 13.Digital root of 21915 =
  14. 14.Digital root of 22 × 38 =
  15. 15.Digital root of 64007 =
  16. 16.Digital root of 22 × 40 =
  17. 17.Digital root of 94 × 62 =
  18. 18.Digital root of 1067 =
  19. 19.Digital root of 77848 =
  20. 20.Digital root of 29 × 85 =
  21. 21.Digital root of 92526 =
  22. 22.Digital root of 78 × 42 =
  23. 23.Digital root of 97581 =
  24. 24.Digital root of 11844 =
  25. 25.Digital root of 31 × 21 =
  26. 26.Digital root of 52 × 69 =
  27. 27.Digital root of 48348 =
  28. 28.Digital root of 34 × 17 =
  29. 29.Digital root of 97 × 28 =
  30. 30.Digital root of 1341 =
  31. 31.Digital root of 84 × 20 =
  32. 32.Digital root of 45 × 24 =
  33. 33.Digital root of 5759 =
  34. 34.Digital root of 17648 =
  35. 35.Digital root of 19 × 41 =
  36. 36.Digital root of 17433 =
  37. 37.Digital root of 21841 =
  38. 38.Digital root of 6493 =
  39. 39.Digital root of 37 × 82 =
  40. 40.Digital root of 52 × 63 =

Answer key

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

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