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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 245 · 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 50 × 64 =
  2. 2.Digital root of 69967 =
  3. 3.Digital root of 42614 =
  4. 4.Digital root of 33 × 17 =
  5. 5.Digital root of 12 × 65 =
  6. 6.Digital root of 21153 =
  7. 7.Digital root of 98627 =
  8. 8.Digital root of 87872 =
  9. 9.Digital root of 62 × 40 =
  10. 10.Digital root of 30 × 60 =
  11. 11.Digital root of 266 =
  12. 12.Digital root of 50 × 57 =
  13. 13.Digital root of 92379 =
  14. 14.Digital root of 54 × 87 =
  15. 15.Digital root of 25 × 69 =
  16. 16.Digital root of 61278 =
  17. 17.Digital root of 46 × 89 =
  18. 18.Digital root of 91 × 46 =
  19. 19.Digital root of 56622 =
  20. 20.Digital root of 81 × 36 =
  21. 21.Digital root of 90 × 84 =
  22. 22.Digital root of 46 × 89 =
  23. 23.Digital root of 63223 =
  24. 24.Digital root of 83788 =
  25. 25.Digital root of 13230 =
  26. 26.Digital root of 57 × 43 =
  27. 27.Digital root of 81715 =
  28. 28.Digital root of 7956 =
  29. 29.Digital root of 55 × 94 =
  30. 30.Digital root of 3731 =
  31. 31.Digital root of 71684 =
  32. 32.Digital root of 18091 =
  33. 33.Digital root of 47424 =
  34. 34.Digital root of 21 × 80 =
  35. 35.Digital root of 8193 =
  36. 36.Digital root of 73286 =
  37. 37.Digital root of 68339 =
  38. 38.Digital root of 52769 =
  39. 39.Digital root of 14 × 16 =
  40. 40.Digital root of 98823 =

Answer key

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

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