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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 890 · 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 88 × 31 =
  2. 2.Digital root of 12014 =
  3. 3.Digital root of 61767 =
  4. 4.Digital root of 65071 =
  5. 5.Digital root of 42250 =
  6. 6.Digital root of 27 × 59 =
  7. 7.Digital root of 42 × 17 =
  8. 8.Digital root of 37 × 78 =
  9. 9.Digital root of 38 × 17 =
  10. 10.Digital root of 70 × 30 =
  11. 11.Digital root of 96550 =
  12. 12.Digital root of 63 × 97 =
  13. 13.Digital root of 62795 =
  14. 14.Digital root of 10797 =
  15. 15.Digital root of 99 × 96 =
  16. 16.Digital root of 38151 =
  17. 17.Digital root of 66 × 27 =
  18. 18.Digital root of 56 × 46 =
  19. 19.Digital root of 43635 =
  20. 20.Digital root of 25414 =
  21. 21.Digital root of 79735 =
  22. 22.Digital root of 61538 =
  23. 23.Digital root of 17716 =
  24. 24.Digital root of 39 × 57 =
  25. 25.Digital root of 65879 =
  26. 26.Digital root of 87 × 79 =
  27. 27.Digital root of 43 × 96 =
  28. 28.Digital root of 99 × 83 =
  29. 29.Digital root of 89221 =
  30. 30.Digital root of 39524 =
  31. 31.Digital root of 49197 =
  32. 32.Digital root of 79024 =
  33. 33.Digital root of 50756 =
  34. 34.Digital root of 57872 =
  35. 35.Digital root of 73974 =
  36. 36.Digital root of 95 × 31 =
  37. 37.Digital root of 85183 =
  38. 38.Digital root of 94501 =
  39. 39.Digital root of 97 × 34 =
  40. 40.Digital root of 65 × 92 =

Answer key

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

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