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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 529 · 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 61 × 68 =
  2. 2.Digital root of 24379 =
  3. 3.Digital root of 1281 =
  4. 4.Digital root of 35 × 52 =
  5. 5.Digital root of 83289 =
  6. 6.Digital root of 36 × 99 =
  7. 7.Digital root of 41947 =
  8. 8.Digital root of 4060 =
  9. 9.Digital root of 91232 =
  10. 10.Digital root of 77974 =
  11. 11.Digital root of 62 × 21 =
  12. 12.Digital root of 36 × 93 =
  13. 13.Digital root of 89 × 62 =
  14. 14.Digital root of 44 × 82 =
  15. 15.Digital root of 68 × 48 =
  16. 16.Digital root of 66288 =
  17. 17.Digital root of 18116 =
  18. 18.Digital root of 36785 =
  19. 19.Digital root of 4118 =
  20. 20.Digital root of 38 × 42 =
  21. 21.Digital root of 85816 =
  22. 22.Digital root of 43556 =
  23. 23.Digital root of 36810 =
  24. 24.Digital root of 12 × 94 =
  25. 25.Digital root of 45 × 67 =
  26. 26.Digital root of 57105 =
  27. 27.Digital root of 43 × 95 =
  28. 28.Digital root of 72298 =
  29. 29.Digital root of 18160 =
  30. 30.Digital root of 98 × 53 =
  31. 31.Digital root of 58 × 38 =
  32. 32.Digital root of 47766 =
  33. 33.Digital root of 73645 =
  34. 34.Digital root of 68 × 82 =
  35. 35.Digital root of 7927 =
  36. 36.Digital root of 24 × 25 =
  37. 37.Digital root of 84769 =
  38. 38.Digital root of 76 × 70 =
  39. 39.Digital root of 92926 =
  40. 40.Digital root of 96 × 60 =

Answer key

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

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