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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 1 · 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 47839 =
  2. 2.Digital root of 17191 =
  3. 3.Digital root of 19 × 23 =
  4. 4.Digital root of 88 × 81 =
  5. 5.Digital root of 64630 =
  6. 6.Digital root of 24633 =
  7. 7.Digital root of 50858 =
  8. 8.Digital root of 61 × 22 =
  9. 9.Digital root of 33 × 75 =
  10. 10.Digital root of 75 × 47 =
  11. 11.Digital root of 97693 =
  12. 12.Digital root of 43 × 95 =
  13. 13.Digital root of 8571 =
  14. 14.Digital root of 72 × 94 =
  15. 15.Digital root of 90216 =
  16. 16.Digital root of 59826 =
  17. 17.Digital root of 18928 =
  18. 18.Digital root of 78808 =
  19. 19.Digital root of 37 × 15 =
  20. 20.Digital root of 51 × 24 =
  21. 21.Digital root of 91624 =
  22. 22.Digital root of 38 × 77 =
  23. 23.Digital root of 88 × 63 =
  24. 24.Digital root of 93192 =
  25. 25.Digital root of 65 × 19 =
  26. 26.Digital root of 30 × 21 =
  27. 27.Digital root of 68 × 78 =
  28. 28.Digital root of 25649 =
  29. 29.Digital root of 23984 =
  30. 30.Digital root of 29092 =
  31. 31.Digital root of 73 × 15 =
  32. 32.Digital root of 31 × 38 =
  33. 33.Digital root of 17115 =
  34. 34.Digital root of 32 × 29 =
  35. 35.Digital root of 68900 =
  36. 36.Digital root of 56 × 71 =
  37. 37.Digital root of 94 × 12 =
  38. 38.Digital root of 81 × 80 =
  39. 39.Digital root of 75 × 85 =
  40. 40.Digital root of 59 × 18 =

Answer key

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

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