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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 296 · 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 76494 =
  2. 2.Digital root of 85643 =
  3. 3.Digital root of 4203 =
  4. 4.Digital root of 28 × 89 =
  5. 5.Digital root of 88 × 97 =
  6. 6.Digital root of 30 × 87 =
  7. 7.Digital root of 57274 =
  8. 8.Digital root of 70349 =
  9. 9.Digital root of 60 × 79 =
  10. 10.Digital root of 39848 =
  11. 11.Digital root of 64 × 49 =
  12. 12.Digital root of 16 × 28 =
  13. 13.Digital root of 31 × 63 =
  14. 14.Digital root of 13938 =
  15. 15.Digital root of 17254 =
  16. 16.Digital root of 32 × 68 =
  17. 17.Digital root of 68 × 61 =
  18. 18.Digital root of 17791 =
  19. 19.Digital root of 25250 =
  20. 20.Digital root of 38606 =
  21. 21.Digital root of 28535 =
  22. 22.Digital root of 6640 =
  23. 23.Digital root of 45 × 12 =
  24. 24.Digital root of 39670 =
  25. 25.Digital root of 71 × 17 =
  26. 26.Digital root of 39 × 88 =
  27. 27.Digital root of 46087 =
  28. 28.Digital root of 37551 =
  29. 29.Digital root of 98918 =
  30. 30.Digital root of 58786 =
  31. 31.Digital root of 85 × 47 =
  32. 32.Digital root of 75 × 19 =
  33. 33.Digital root of 72 × 26 =
  34. 34.Digital root of 90619 =
  35. 35.Digital root of 78 × 77 =
  36. 36.Digital root of 63514 =
  37. 37.Digital root of 42480 =
  38. 38.Digital root of 72 × 88 =
  39. 39.Digital root of 34617 =
  40. 40.Digital root of 12 × 70 =

Answer key

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

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