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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 251 · 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 15 × 27 =
  2. 2.Digital root of 24 × 37 =
  3. 3.Digital root of 77377 =
  4. 4.Digital root of 57 × 51 =
  5. 5.Digital root of 20 × 39 =
  6. 6.Digital root of 54449 =
  7. 7.Digital root of 18687 =
  8. 8.Digital root of 38 × 99 =
  9. 9.Digital root of 21124 =
  10. 10.Digital root of 22683 =
  11. 11.Digital root of 75535 =
  12. 12.Digital root of 71 × 42 =
  13. 13.Digital root of 79194 =
  14. 14.Digital root of 80484 =
  15. 15.Digital root of 26 × 34 =
  16. 16.Digital root of 49 × 54 =
  17. 17.Digital root of 14739 =
  18. 18.Digital root of 66 × 46 =
  19. 19.Digital root of 90948 =
  20. 20.Digital root of 96 × 65 =
  21. 21.Digital root of 20047 =
  22. 22.Digital root of 28 × 34 =
  23. 23.Digital root of 35 × 98 =
  24. 24.Digital root of 59753 =
  25. 25.Digital root of 46 × 19 =
  26. 26.Digital root of 96491 =
  27. 27.Digital root of 71 × 51 =
  28. 28.Digital root of 20672 =
  29. 29.Digital root of 58 × 80 =
  30. 30.Digital root of 1444 =
  31. 31.Digital root of 39 × 44 =
  32. 32.Digital root of 27296 =
  33. 33.Digital root of 73248 =
  34. 34.Digital root of 37 × 16 =
  35. 35.Digital root of 67477 =
  36. 36.Digital root of 30 × 25 =
  37. 37.Digital root of 54 × 35 =
  38. 38.Digital root of 22412 =
  39. 39.Digital root of 35837 =
  40. 40.Digital root of 63 × 67 =

Answer key

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

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