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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 661 · 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 73100 =
  2. 2.Digital root of 99 × 39 =
  3. 3.Digital root of 7190 =
  4. 4.Digital root of 28 × 23 =
  5. 5.Digital root of 63 × 15 =
  6. 6.Digital root of 18457 =
  7. 7.Digital root of 22 × 48 =
  8. 8.Digital root of 16061 =
  9. 9.Digital root of 79 × 48 =
  10. 10.Digital root of 64080 =
  11. 11.Digital root of 52126 =
  12. 12.Digital root of 39209 =
  13. 13.Digital root of 11407 =
  14. 14.Digital root of 98 × 79 =
  15. 15.Digital root of 46322 =
  16. 16.Digital root of 21248 =
  17. 17.Digital root of 12 × 33 =
  18. 18.Digital root of 15532 =
  19. 19.Digital root of 25871 =
  20. 20.Digital root of 70393 =
  21. 21.Digital root of 37 × 56 =
  22. 22.Digital root of 49438 =
  23. 23.Digital root of 58819 =
  24. 24.Digital root of 51 × 48 =
  25. 25.Digital root of 26132 =
  26. 26.Digital root of 23 × 90 =
  27. 27.Digital root of 97 × 19 =
  28. 28.Digital root of 74232 =
  29. 29.Digital root of 76108 =
  30. 30.Digital root of 40 × 17 =
  31. 31.Digital root of 4109 =
  32. 32.Digital root of 88 × 71 =
  33. 33.Digital root of 96855 =
  34. 34.Digital root of 40736 =
  35. 35.Digital root of 52 × 72 =
  36. 36.Digital root of 89 × 51 =
  37. 37.Digital root of 39744 =
  38. 38.Digital root of 71 × 32 =
  39. 39.Digital root of 6008 =
  40. 40.Digital root of 34476 =

Answer key

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

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