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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 162 · 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 86920 =
  2. 2.Digital root of 20340 =
  3. 3.Digital root of 31275 =
  4. 4.Digital root of 85 × 95 =
  5. 5.Digital root of 17984 =
  6. 6.Digital root of 61077 =
  7. 7.Digital root of 94865 =
  8. 8.Digital root of 35 × 55 =
  9. 9.Digital root of 61 × 84 =
  10. 10.Digital root of 72316 =
  11. 11.Digital root of 72 × 76 =
  12. 12.Digital root of 70519 =
  13. 13.Digital root of 32 × 40 =
  14. 14.Digital root of 14 × 29 =
  15. 15.Digital root of 90 × 74 =
  16. 16.Digital root of 83 × 46 =
  17. 17.Digital root of 30 × 50 =
  18. 18.Digital root of 86894 =
  19. 19.Digital root of 80 × 12 =
  20. 20.Digital root of 9989 =
  21. 21.Digital root of 29 × 13 =
  22. 22.Digital root of 59322 =
  23. 23.Digital root of 87 × 27 =
  24. 24.Digital root of 77 × 59 =
  25. 25.Digital root of 22 × 93 =
  26. 26.Digital root of 35326 =
  27. 27.Digital root of 64 × 20 =
  28. 28.Digital root of 20 × 60 =
  29. 29.Digital root of 31 × 63 =
  30. 30.Digital root of 90 × 97 =
  31. 31.Digital root of 85822 =
  32. 32.Digital root of 99044 =
  33. 33.Digital root of 68 × 83 =
  34. 34.Digital root of 98 × 99 =
  35. 35.Digital root of 62173 =
  36. 36.Digital root of 30 × 32 =
  37. 37.Digital root of 17271 =
  38. 38.Digital root of 73 × 91 =
  39. 39.Digital root of 96754 =
  40. 40.Digital root of 26 × 54 =

Answer key

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

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