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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 716 · 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 30 × 94 =
  2. 2.Digital root of 92405 =
  3. 3.Digital root of 70929 =
  4. 4.Digital root of 76739 =
  5. 5.Digital root of 52 × 39 =
  6. 6.Digital root of 26 × 19 =
  7. 7.Digital root of 27173 =
  8. 8.Digital root of 90 × 14 =
  9. 9.Digital root of 98929 =
  10. 10.Digital root of 37430 =
  11. 11.Digital root of 11641 =
  12. 12.Digital root of 98270 =
  13. 13.Digital root of 77 × 98 =
  14. 14.Digital root of 82975 =
  15. 15.Digital root of 46770 =
  16. 16.Digital root of 20 × 29 =
  17. 17.Digital root of 21 × 79 =
  18. 18.Digital root of 68737 =
  19. 19.Digital root of 57 × 18 =
  20. 20.Digital root of 24 × 92 =
  21. 21.Digital root of 51 × 80 =
  22. 22.Digital root of 70507 =
  23. 23.Digital root of 27788 =
  24. 24.Digital root of 73414 =
  25. 25.Digital root of 48 × 15 =
  26. 26.Digital root of 69 × 47 =
  27. 27.Digital root of 48262 =
  28. 28.Digital root of 75694 =
  29. 29.Digital root of 77 × 23 =
  30. 30.Digital root of 28507 =
  31. 31.Digital root of 97954 =
  32. 32.Digital root of 17072 =
  33. 33.Digital root of 12948 =
  34. 34.Digital root of 56608 =
  35. 35.Digital root of 49 × 79 =
  36. 36.Digital root of 57769 =
  37. 37.Digital root of 65 × 54 =
  38. 38.Digital root of 36357 =
  39. 39.Digital root of 16939 =
  40. 40.Digital root of 91 × 61 =

Answer key

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

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