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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 241 · 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 66 × 88 =
  2. 2.Digital root of 74 × 29 =
  3. 3.Digital root of 33 × 95 =
  4. 4.Digital root of 11937 =
  5. 5.Digital root of 1203 =
  6. 6.Digital root of 50 × 83 =
  7. 7.Digital root of 53623 =
  8. 8.Digital root of 88 × 86 =
  9. 9.Digital root of 85 × 13 =
  10. 10.Digital root of 763 =
  11. 11.Digital root of 14704 =
  12. 12.Digital root of 97088 =
  13. 13.Digital root of 77 × 53 =
  14. 14.Digital root of 67 × 40 =
  15. 15.Digital root of 19 × 82 =
  16. 16.Digital root of 67 × 90 =
  17. 17.Digital root of 10388 =
  18. 18.Digital root of 42 × 17 =
  19. 19.Digital root of 38314 =
  20. 20.Digital root of 60886 =
  21. 21.Digital root of 37351 =
  22. 22.Digital root of 48 × 54 =
  23. 23.Digital root of 44561 =
  24. 24.Digital root of 92 × 79 =
  25. 25.Digital root of 67 × 49 =
  26. 26.Digital root of 88 × 12 =
  27. 27.Digital root of 88 × 46 =
  28. 28.Digital root of 50 × 53 =
  29. 29.Digital root of 20874 =
  30. 30.Digital root of 34691 =
  31. 31.Digital root of 75460 =
  32. 32.Digital root of 70 × 13 =
  33. 33.Digital root of 93 × 20 =
  34. 34.Digital root of 36525 =
  35. 35.Digital root of 43510 =
  36. 36.Digital root of 22620 =
  37. 37.Digital root of 54548 =
  38. 38.Digital root of 4765 =
  39. 39.Digital root of 22315 =
  40. 40.Digital root of 90515 =

Answer key

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

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