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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 616 · 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 98 × 59 =
  2. 2.Digital root of 29111 =
  3. 3.Digital root of 67 × 92 =
  4. 4.Digital root of 28057 =
  5. 5.Digital root of 99 × 37 =
  6. 6.Digital root of 14 × 40 =
  7. 7.Digital root of 95 × 59 =
  8. 8.Digital root of 28 × 14 =
  9. 9.Digital root of 12 × 16 =
  10. 10.Digital root of 61 × 62 =
  11. 11.Digital root of 30 × 56 =
  12. 12.Digital root of 52 × 76 =
  13. 13.Digital root of 25699 =
  14. 14.Digital root of 9970 =
  15. 15.Digital root of 85041 =
  16. 16.Digital root of 59656 =
  17. 17.Digital root of 28802 =
  18. 18.Digital root of 47049 =
  19. 19.Digital root of 55364 =
  20. 20.Digital root of 64976 =
  21. 21.Digital root of 28 × 56 =
  22. 22.Digital root of 75708 =
  23. 23.Digital root of 60 × 32 =
  24. 24.Digital root of 80030 =
  25. 25.Digital root of 33626 =
  26. 26.Digital root of 47867 =
  27. 27.Digital root of 82225 =
  28. 28.Digital root of 21859 =
  29. 29.Digital root of 63969 =
  30. 30.Digital root of 26 × 24 =
  31. 31.Digital root of 78805 =
  32. 32.Digital root of 26139 =
  33. 33.Digital root of 75 × 98 =
  34. 34.Digital root of 90091 =
  35. 35.Digital root of 63 × 15 =
  36. 36.Digital root of 14 × 14 =
  37. 37.Digital root of 72 × 60 =
  38. 38.Digital root of 27781 =
  39. 39.Digital root of 29962 =
  40. 40.Digital root of 98 × 83 =

Answer key

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

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