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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 813 · 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 37 × 36 =
  2. 2.Digital root of 57538 =
  3. 3.Digital root of 24604 =
  4. 4.Digital root of 93252 =
  5. 5.Digital root of 60392 =
  6. 6.Digital root of 19371 =
  7. 7.Digital root of 64602 =
  8. 8.Digital root of 46 × 28 =
  9. 9.Digital root of 33854 =
  10. 10.Digital root of 87690 =
  11. 11.Digital root of 31666 =
  12. 12.Digital root of 35 × 56 =
  13. 13.Digital root of 46 × 62 =
  14. 14.Digital root of 95 × 18 =
  15. 15.Digital root of 90 × 52 =
  16. 16.Digital root of 61968 =
  17. 17.Digital root of 90 × 64 =
  18. 18.Digital root of 95 × 13 =
  19. 19.Digital root of 55814 =
  20. 20.Digital root of 72 × 86 =
  21. 21.Digital root of 11597 =
  22. 22.Digital root of 67 × 62 =
  23. 23.Digital root of 40 × 39 =
  24. 24.Digital root of 63695 =
  25. 25.Digital root of 31 × 69 =
  26. 26.Digital root of 24 × 35 =
  27. 27.Digital root of 4255 =
  28. 28.Digital root of 29 × 49 =
  29. 29.Digital root of 3973 =
  30. 30.Digital root of 49946 =
  31. 31.Digital root of 20 × 37 =
  32. 32.Digital root of 23 × 66 =
  33. 33.Digital root of 13820 =
  34. 34.Digital root of 26864 =
  35. 35.Digital root of 13324 =
  36. 36.Digital root of 9999 =
  37. 37.Digital root of 83 × 61 =
  38. 38.Digital root of 15708 =
  39. 39.Digital root of 67678 =
  40. 40.Digital root of 68544 =

Answer key

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

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