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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 99 · 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 81 × 33 =
  2. 2.Digital root of 17384 =
  3. 3.Digital root of 99025 =
  4. 4.Digital root of 80228 =
  5. 5.Digital root of 39 × 18 =
  6. 6.Digital root of 23 × 28 =
  7. 7.Digital root of 95715 =
  8. 8.Digital root of 83 × 48 =
  9. 9.Digital root of 19 × 73 =
  10. 10.Digital root of 39941 =
  11. 11.Digital root of 37 × 27 =
  12. 12.Digital root of 82169 =
  13. 13.Digital root of 23322 =
  14. 14.Digital root of 71 × 63 =
  15. 15.Digital root of 72 × 71 =
  16. 16.Digital root of 34450 =
  17. 17.Digital root of 70 × 98 =
  18. 18.Digital root of 41203 =
  19. 19.Digital root of 83466 =
  20. 20.Digital root of 55 × 74 =
  21. 21.Digital root of 93 × 58 =
  22. 22.Digital root of 98 × 15 =
  23. 23.Digital root of 55720 =
  24. 24.Digital root of 86939 =
  25. 25.Digital root of 18358 =
  26. 26.Digital root of 36 × 83 =
  27. 27.Digital root of 67699 =
  28. 28.Digital root of 75952 =
  29. 29.Digital root of 11848 =
  30. 30.Digital root of 24845 =
  31. 31.Digital root of 39 × 19 =
  32. 32.Digital root of 79 × 77 =
  33. 33.Digital root of 85489 =
  34. 34.Digital root of 22 × 89 =
  35. 35.Digital root of 97571 =
  36. 36.Digital root of 22 × 84 =
  37. 37.Digital root of 99 × 85 =
  38. 38.Digital root of 65 × 34 =
  39. 39.Digital root of 24 × 15 =
  40. 40.Digital root of 86 × 22 =

Answer key

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

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