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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 179 · 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 67281 =
  2. 2.Digital root of 20 × 56 =
  3. 3.Digital root of 79 × 30 =
  4. 4.Digital root of 12058 =
  5. 5.Digital root of 21144 =
  6. 6.Digital root of 26 × 37 =
  7. 7.Digital root of 56512 =
  8. 8.Digital root of 81045 =
  9. 9.Digital root of 23 × 85 =
  10. 10.Digital root of 79 × 44 =
  11. 11.Digital root of 92750 =
  12. 12.Digital root of 3884 =
  13. 13.Digital root of 55114 =
  14. 14.Digital root of 37 × 46 =
  15. 15.Digital root of 14078 =
  16. 16.Digital root of 10401 =
  17. 17.Digital root of 61 × 56 =
  18. 18.Digital root of 79092 =
  19. 19.Digital root of 83048 =
  20. 20.Digital root of 32 × 66 =
  21. 21.Digital root of 98050 =
  22. 22.Digital root of 31918 =
  23. 23.Digital root of 97 × 16 =
  24. 24.Digital root of 25 × 55 =
  25. 25.Digital root of 23 × 56 =
  26. 26.Digital root of 19 × 70 =
  27. 27.Digital root of 31 × 77 =
  28. 28.Digital root of 29408 =
  29. 29.Digital root of 90 × 51 =
  30. 30.Digital root of 75 × 95 =
  31. 31.Digital root of 81 × 66 =
  32. 32.Digital root of 64394 =
  33. 33.Digital root of 45 × 99 =
  34. 34.Digital root of 57 × 42 =
  35. 35.Digital root of 40 × 40 =
  36. 36.Digital root of 72260 =
  37. 37.Digital root of 25 × 52 =
  38. 38.Digital root of 22 × 65 =
  39. 39.Digital root of 82173 =
  40. 40.Digital root of 70672 =

Answer key

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

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