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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 649 · 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 12437 =
  2. 2.Digital root of 27 × 29 =
  3. 3.Digital root of 71 × 34 =
  4. 4.Digital root of 63118 =
  5. 5.Digital root of 29844 =
  6. 6.Digital root of 49884 =
  7. 7.Digital root of 80152 =
  8. 8.Digital root of 12962 =
  9. 9.Digital root of 43 × 46 =
  10. 10.Digital root of 19324 =
  11. 11.Digital root of 53 × 39 =
  12. 12.Digital root of 72 × 93 =
  13. 13.Digital root of 46 × 37 =
  14. 14.Digital root of 16650 =
  15. 15.Digital root of 62396 =
  16. 16.Digital root of 17442 =
  17. 17.Digital root of 14 × 92 =
  18. 18.Digital root of 64419 =
  19. 19.Digital root of 64744 =
  20. 20.Digital root of 38 × 76 =
  21. 21.Digital root of 81 × 96 =
  22. 22.Digital root of 41 × 52 =
  23. 23.Digital root of 19792 =
  24. 24.Digital root of 77 × 97 =
  25. 25.Digital root of 61055 =
  26. 26.Digital root of 69 × 53 =
  27. 27.Digital root of 4767 =
  28. 28.Digital root of 6122 =
  29. 29.Digital root of 27 × 52 =
  30. 30.Digital root of 96 × 30 =
  31. 31.Digital root of 15532 =
  32. 32.Digital root of 83 × 68 =
  33. 33.Digital root of 20826 =
  34. 34.Digital root of 54 × 18 =
  35. 35.Digital root of 98 × 83 =
  36. 36.Digital root of 51 × 20 =
  37. 37.Digital root of 50 × 65 =
  38. 38.Digital root of 36 × 93 =
  39. 39.Digital root of 21 × 91 =
  40. 40.Digital root of 38875 =

Answer key

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

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