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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 118 · 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 69 × 18 =
  2. 2.Digital root of 77 × 87 =
  3. 3.Digital root of 9844 =
  4. 4.Digital root of 54 × 34 =
  5. 5.Digital root of 40838 =
  6. 6.Digital root of 77794 =
  7. 7.Digital root of 97590 =
  8. 8.Digital root of 93 × 83 =
  9. 9.Digital root of 30 × 75 =
  10. 10.Digital root of 96 × 36 =
  11. 11.Digital root of 34 × 14 =
  12. 12.Digital root of 63713 =
  13. 13.Digital root of 49481 =
  14. 14.Digital root of 21 × 37 =
  15. 15.Digital root of 36510 =
  16. 16.Digital root of 27378 =
  17. 17.Digital root of 32 × 19 =
  18. 18.Digital root of 33 × 71 =
  19. 19.Digital root of 73 × 31 =
  20. 20.Digital root of 30 × 21 =
  21. 21.Digital root of 84 × 97 =
  22. 22.Digital root of 52117 =
  23. 23.Digital root of 58 × 94 =
  24. 24.Digital root of 99 × 59 =
  25. 25.Digital root of 47 × 96 =
  26. 26.Digital root of 72036 =
  27. 27.Digital root of 28475 =
  28. 28.Digital root of 61911 =
  29. 29.Digital root of 51749 =
  30. 30.Digital root of 6363 =
  31. 31.Digital root of 44 × 27 =
  32. 32.Digital root of 63 × 75 =
  33. 33.Digital root of 8890 =
  34. 34.Digital root of 17 × 31 =
  35. 35.Digital root of 60 × 58 =
  36. 36.Digital root of 36957 =
  37. 37.Digital root of 44 × 42 =
  38. 38.Digital root of 62 × 41 =
  39. 39.Digital root of 21076 =
  40. 40.Digital root of 21444 =

Answer key

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

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