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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 57 · 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 43 × 59 =
  2. 2.Digital root of 35712 =
  3. 3.Digital root of 39166 =
  4. 4.Digital root of 80042 =
  5. 5.Digital root of 45 × 45 =
  6. 6.Digital root of 19 × 67 =
  7. 7.Digital root of 68948 =
  8. 8.Digital root of 80064 =
  9. 9.Digital root of 35 × 15 =
  10. 10.Digital root of 49043 =
  11. 11.Digital root of 67 × 37 =
  12. 12.Digital root of 30 × 38 =
  13. 13.Digital root of 84644 =
  14. 14.Digital root of 7564 =
  15. 15.Digital root of 96025 =
  16. 16.Digital root of 89106 =
  17. 17.Digital root of 92801 =
  18. 18.Digital root of 20873 =
  19. 19.Digital root of 28385 =
  20. 20.Digital root of 12 × 96 =
  21. 21.Digital root of 65459 =
  22. 22.Digital root of 36520 =
  23. 23.Digital root of 27441 =
  24. 24.Digital root of 67847 =
  25. 25.Digital root of 23 × 65 =
  26. 26.Digital root of 33 × 95 =
  27. 27.Digital root of 75 × 17 =
  28. 28.Digital root of 12 × 84 =
  29. 29.Digital root of 12221 =
  30. 30.Digital root of 9990 =
  31. 31.Digital root of 77 × 94 =
  32. 32.Digital root of 72023 =
  33. 33.Digital root of 86932 =
  34. 34.Digital root of 78 × 45 =
  35. 35.Digital root of 39 × 86 =
  36. 36.Digital root of 80 × 61 =
  37. 37.Digital root of 76659 =
  38. 38.Digital root of 11906 =
  39. 39.Digital root of 83039 =
  40. 40.Digital root of 21 × 94 =

Answer key

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

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