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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 353 · 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 17 × 28 =
  2. 2.Digital root of 84 × 96 =
  3. 3.Digital root of 5450 =
  4. 4.Digital root of 79 × 69 =
  5. 5.Digital root of 97884 =
  6. 6.Digital root of 41 × 26 =
  7. 7.Digital root of 16424 =
  8. 8.Digital root of 78464 =
  9. 9.Digital root of 72384 =
  10. 10.Digital root of 99 × 17 =
  11. 11.Digital root of 97264 =
  12. 12.Digital root of 88 × 85 =
  13. 13.Digital root of 10563 =
  14. 14.Digital root of 91319 =
  15. 15.Digital root of 56825 =
  16. 16.Digital root of 48 × 61 =
  17. 17.Digital root of 86 × 45 =
  18. 18.Digital root of 68 × 70 =
  19. 19.Digital root of 66 × 46 =
  20. 20.Digital root of 80 × 30 =
  21. 21.Digital root of 84803 =
  22. 22.Digital root of 25122 =
  23. 23.Digital root of 3110 =
  24. 24.Digital root of 50216 =
  25. 25.Digital root of 52 × 57 =
  26. 26.Digital root of 73224 =
  27. 27.Digital root of 24 × 45 =
  28. 28.Digital root of 77860 =
  29. 29.Digital root of 46 × 62 =
  30. 30.Digital root of 72469 =
  31. 31.Digital root of 96 × 81 =
  32. 32.Digital root of 43 × 71 =
  33. 33.Digital root of 84 × 62 =
  34. 34.Digital root of 17 × 73 =
  35. 35.Digital root of 87 × 62 =
  36. 36.Digital root of 11340 =
  37. 37.Digital root of 83 × 44 =
  38. 38.Digital root of 79 × 12 =
  39. 39.Digital root of 62 × 96 =
  40. 40.Digital root of 73612 =

Answer key

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

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