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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 426 · 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 82 × 14 =
  2. 2.Digital root of 44 × 67 =
  3. 3.Digital root of 51803 =
  4. 4.Digital root of 99 × 41 =
  5. 5.Digital root of 71 × 38 =
  6. 6.Digital root of 26 × 72 =
  7. 7.Digital root of 53 × 48 =
  8. 8.Digital root of 76197 =
  9. 9.Digital root of 31728 =
  10. 10.Digital root of 88872 =
  11. 11.Digital root of 73213 =
  12. 12.Digital root of 39712 =
  13. 13.Digital root of 86 × 46 =
  14. 14.Digital root of 82219 =
  15. 15.Digital root of 26 × 22 =
  16. 16.Digital root of 48769 =
  17. 17.Digital root of 15876 =
  18. 18.Digital root of 39 × 75 =
  19. 19.Digital root of 15 × 89 =
  20. 20.Digital root of 9551 =
  21. 21.Digital root of 56 × 16 =
  22. 22.Digital root of 87 × 77 =
  23. 23.Digital root of 1054 =
  24. 24.Digital root of 18530 =
  25. 25.Digital root of 3918 =
  26. 26.Digital root of 49710 =
  27. 27.Digital root of 10946 =
  28. 28.Digital root of 94375 =
  29. 29.Digital root of 93136 =
  30. 30.Digital root of 22310 =
  31. 31.Digital root of 47514 =
  32. 32.Digital root of 62571 =
  33. 33.Digital root of 80 × 92 =
  34. 34.Digital root of 74418 =
  35. 35.Digital root of 29 × 40 =
  36. 36.Digital root of 21 × 47 =
  37. 37.Digital root of 21 × 54 =
  38. 38.Digital root of 79228 =
  39. 39.Digital root of 73 × 19 =
  40. 40.Digital root of 51 × 33 =

Answer key

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

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