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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 565 · 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 26464 =
  2. 2.Digital root of 30744 =
  3. 3.Digital root of 61 × 14 =
  4. 4.Digital root of 18 × 88 =
  5. 5.Digital root of 19541 =
  6. 6.Digital root of 15 × 36 =
  7. 7.Digital root of 25 × 23 =
  8. 8.Digital root of 14863 =
  9. 9.Digital root of 5674 =
  10. 10.Digital root of 3743 =
  11. 11.Digital root of 85 × 75 =
  12. 12.Digital root of 16 × 98 =
  13. 13.Digital root of 27735 =
  14. 14.Digital root of 68 × 78 =
  15. 15.Digital root of 95 × 59 =
  16. 16.Digital root of 7466 =
  17. 17.Digital root of 27678 =
  18. 18.Digital root of 63 × 83 =
  19. 19.Digital root of 82653 =
  20. 20.Digital root of 50 × 65 =
  21. 21.Digital root of 85 × 82 =
  22. 22.Digital root of 58 × 73 =
  23. 23.Digital root of 92640 =
  24. 24.Digital root of 58 × 65 =
  25. 25.Digital root of 63 × 68 =
  26. 26.Digital root of 77 × 75 =
  27. 27.Digital root of 80055 =
  28. 28.Digital root of 50327 =
  29. 29.Digital root of 46 × 25 =
  30. 30.Digital root of 80660 =
  31. 31.Digital root of 20819 =
  32. 32.Digital root of 35 × 75 =
  33. 33.Digital root of 24 × 94 =
  34. 34.Digital root of 90 × 78 =
  35. 35.Digital root of 79040 =
  36. 36.Digital root of 26 × 70 =
  37. 37.Digital root of 91 × 12 =
  38. 38.Digital root of 97 × 15 =
  39. 39.Digital root of 21 × 46 =
  40. 40.Digital root of 43049 =

Answer key

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

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