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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 253 · 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 37 × 72 =
  2. 2.Digital root of 66 × 65 =
  3. 3.Digital root of 24183 =
  4. 4.Digital root of 39385 =
  5. 5.Digital root of 45 × 89 =
  6. 6.Digital root of 87 × 55 =
  7. 7.Digital root of 9158 =
  8. 8.Digital root of 84377 =
  9. 9.Digital root of 65 × 82 =
  10. 10.Digital root of 19591 =
  11. 11.Digital root of 96506 =
  12. 12.Digital root of 56 × 65 =
  13. 13.Digital root of 53 × 34 =
  14. 14.Digital root of 28590 =
  15. 15.Digital root of 45596 =
  16. 16.Digital root of 98 × 63 =
  17. 17.Digital root of 63 × 94 =
  18. 18.Digital root of 74 × 22 =
  19. 19.Digital root of 14503 =
  20. 20.Digital root of 41285 =
  21. 21.Digital root of 52657 =
  22. 22.Digital root of 84 × 97 =
  23. 23.Digital root of 57 × 40 =
  24. 24.Digital root of 44944 =
  25. 25.Digital root of 57 × 89 =
  26. 26.Digital root of 26 × 89 =
  27. 27.Digital root of 15310 =
  28. 28.Digital root of 11008 =
  29. 29.Digital root of 64 × 13 =
  30. 30.Digital root of 78980 =
  31. 31.Digital root of 20 × 63 =
  32. 32.Digital root of 59563 =
  33. 33.Digital root of 19201 =
  34. 34.Digital root of 50 × 23 =
  35. 35.Digital root of 17 × 25 =
  36. 36.Digital root of 42 × 97 =
  37. 37.Digital root of 95 × 65 =
  38. 38.Digital root of 88552 =
  39. 39.Digital root of 41272 =
  40. 40.Digital root of 76 × 47 =

Answer key

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

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