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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 655 · 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 2692 =
  2. 2.Digital root of 12350 =
  3. 3.Digital root of 40 × 61 =
  4. 4.Digital root of 91520 =
  5. 5.Digital root of 57 × 28 =
  6. 6.Digital root of 93315 =
  7. 7.Digital root of 64 × 74 =
  8. 8.Digital root of 63 × 62 =
  9. 9.Digital root of 83 × 92 =
  10. 10.Digital root of 91965 =
  11. 11.Digital root of 61 × 41 =
  12. 12.Digital root of 41749 =
  13. 13.Digital root of 90512 =
  14. 14.Digital root of 75 × 72 =
  15. 15.Digital root of 71 × 53 =
  16. 16.Digital root of 93 × 18 =
  17. 17.Digital root of 55 × 92 =
  18. 18.Digital root of 58 × 92 =
  19. 19.Digital root of 78584 =
  20. 20.Digital root of 5458 =
  21. 21.Digital root of 84 × 66 =
  22. 22.Digital root of 97291 =
  23. 23.Digital root of 92716 =
  24. 24.Digital root of 95185 =
  25. 25.Digital root of 93 × 77 =
  26. 26.Digital root of 92 × 77 =
  27. 27.Digital root of 94 × 62 =
  28. 28.Digital root of 79946 =
  29. 29.Digital root of 41186 =
  30. 30.Digital root of 62 × 75 =
  31. 31.Digital root of 88292 =
  32. 32.Digital root of 72786 =
  33. 33.Digital root of 27 × 45 =
  34. 34.Digital root of 16 × 13 =
  35. 35.Digital root of 85 × 30 =
  36. 36.Digital root of 96980 =
  37. 37.Digital root of 41 × 23 =
  38. 38.Digital root of 39 × 15 =
  39. 39.Digital root of 89 × 63 =
  40. 40.Digital root of 52169 =

Answer key

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

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