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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 10 · 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 31502 =
  2. 2.Digital root of 40963 =
  3. 3.Digital root of 31443 =
  4. 4.Digital root of 80 × 66 =
  5. 5.Digital root of 6176 =
  6. 6.Digital root of 47 × 64 =
  7. 7.Digital root of 53 × 91 =
  8. 8.Digital root of 53 × 24 =
  9. 9.Digital root of 8322 =
  10. 10.Digital root of 86 × 83 =
  11. 11.Digital root of 30 × 92 =
  12. 12.Digital root of 90045 =
  13. 13.Digital root of 75808 =
  14. 14.Digital root of 67628 =
  15. 15.Digital root of 20 × 62 =
  16. 16.Digital root of 24085 =
  17. 17.Digital root of 95 × 22 =
  18. 18.Digital root of 92 × 89 =
  19. 19.Digital root of 77731 =
  20. 20.Digital root of 80 × 45 =
  21. 21.Digital root of 70 × 52 =
  22. 22.Digital root of 97439 =
  23. 23.Digital root of 72 × 78 =
  24. 24.Digital root of 90292 =
  25. 25.Digital root of 22 × 93 =
  26. 26.Digital root of 50 × 19 =
  27. 27.Digital root of 73 × 67 =
  28. 28.Digital root of 73 × 94 =
  29. 29.Digital root of 35 × 86 =
  30. 30.Digital root of 88314 =
  31. 31.Digital root of 94 × 26 =
  32. 32.Digital root of 3800 =
  33. 33.Digital root of 97 × 76 =
  34. 34.Digital root of 36492 =
  35. 35.Digital root of 11468 =
  36. 36.Digital root of 58 × 47 =
  37. 37.Digital root of 24 × 89 =
  38. 38.Digital root of 38454 =
  39. 39.Digital root of 54 × 71 =
  40. 40.Digital root of 26659 =

Answer key

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

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