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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 990 · 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 87284 =
  2. 2.Digital root of 53021 =
  3. 3.Digital root of 14 × 85 =
  4. 4.Digital root of 42 × 24 =
  5. 5.Digital root of 62 × 47 =
  6. 6.Digital root of 14011 =
  7. 7.Digital root of 55 × 43 =
  8. 8.Digital root of 87043 =
  9. 9.Digital root of 80397 =
  10. 10.Digital root of 78 × 37 =
  11. 11.Digital root of 19 × 95 =
  12. 12.Digital root of 12 × 99 =
  13. 13.Digital root of 25961 =
  14. 14.Digital root of 24 × 89 =
  15. 15.Digital root of 33 × 53 =
  16. 16.Digital root of 71 × 79 =
  17. 17.Digital root of 47 × 62 =
  18. 18.Digital root of 61545 =
  19. 19.Digital root of 90948 =
  20. 20.Digital root of 24 × 52 =
  21. 21.Digital root of 10497 =
  22. 22.Digital root of 61759 =
  23. 23.Digital root of 73 × 63 =
  24. 24.Digital root of 24370 =
  25. 25.Digital root of 96881 =
  26. 26.Digital root of 75158 =
  27. 27.Digital root of 6149 =
  28. 28.Digital root of 27 × 56 =
  29. 29.Digital root of 84448 =
  30. 30.Digital root of 23 × 20 =
  31. 31.Digital root of 61808 =
  32. 32.Digital root of 91 × 33 =
  33. 33.Digital root of 1495 =
  34. 34.Digital root of 87947 =
  35. 35.Digital root of 29680 =
  36. 36.Digital root of 28 × 34 =
  37. 37.Digital root of 1399 =
  38. 38.Digital root of 31988 =
  39. 39.Digital root of 24 × 14 =
  40. 40.Digital root of 84 × 85 =

Answer key

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

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