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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 191 · 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 × 73 =
  2. 2.Digital root of 4325 =
  3. 3.Digital root of 52477 =
  4. 4.Digital root of 5615 =
  5. 5.Digital root of 43101 =
  6. 6.Digital root of 42 × 84 =
  7. 7.Digital root of 47 × 34 =
  8. 8.Digital root of 49562 =
  9. 9.Digital root of 89 × 88 =
  10. 10.Digital root of 12 × 79 =
  11. 11.Digital root of 81 × 20 =
  12. 12.Digital root of 30662 =
  13. 13.Digital root of 97608 =
  14. 14.Digital root of 66 × 96 =
  15. 15.Digital root of 24600 =
  16. 16.Digital root of 54295 =
  17. 17.Digital root of 83 × 12 =
  18. 18.Digital root of 6109 =
  19. 19.Digital root of 5080 =
  20. 20.Digital root of 81 × 31 =
  21. 21.Digital root of 53 × 66 =
  22. 22.Digital root of 61 × 27 =
  23. 23.Digital root of 98 × 62 =
  24. 24.Digital root of 98 × 79 =
  25. 25.Digital root of 49 × 45 =
  26. 26.Digital root of 8653 =
  27. 27.Digital root of 49452 =
  28. 28.Digital root of 9476 =
  29. 29.Digital root of 12010 =
  30. 30.Digital root of 80 × 65 =
  31. 31.Digital root of 91785 =
  32. 32.Digital root of 25723 =
  33. 33.Digital root of 83 × 53 =
  34. 34.Digital root of 83 × 39 =
  35. 35.Digital root of 58 × 33 =
  36. 36.Digital root of 27340 =
  37. 37.Digital root of 79413 =
  38. 38.Digital root of 25 × 21 =
  39. 39.Digital root of 45 × 41 =
  40. 40.Digital root of 70 × 40 =

Answer key

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

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