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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 634 · 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 21 × 22 =
  2. 2.Digital root of 67317 =
  3. 3.Digital root of 17 × 92 =
  4. 4.Digital root of 38716 =
  5. 5.Digital root of 61 × 44 =
  6. 6.Digital root of 60 × 23 =
  7. 7.Digital root of 32 × 44 =
  8. 8.Digital root of 42 × 68 =
  9. 9.Digital root of 20834 =
  10. 10.Digital root of 43675 =
  11. 11.Digital root of 34 × 18 =
  12. 12.Digital root of 96720 =
  13. 13.Digital root of 90 × 76 =
  14. 14.Digital root of 18881 =
  15. 15.Digital root of 6964 =
  16. 16.Digital root of 10504 =
  17. 17.Digital root of 67 × 34 =
  18. 18.Digital root of 25387 =
  19. 19.Digital root of 12 × 20 =
  20. 20.Digital root of 50478 =
  21. 21.Digital root of 92592 =
  22. 22.Digital root of 65961 =
  23. 23.Digital root of 3906 =
  24. 24.Digital root of 22 × 47 =
  25. 25.Digital root of 5478 =
  26. 26.Digital root of 69738 =
  27. 27.Digital root of 511 =
  28. 28.Digital root of 95 × 41 =
  29. 29.Digital root of 27895 =
  30. 30.Digital root of 21 × 90 =
  31. 31.Digital root of 40205 =
  32. 32.Digital root of 14 × 23 =
  33. 33.Digital root of 81 × 54 =
  34. 34.Digital root of 75426 =
  35. 35.Digital root of 99 × 58 =
  36. 36.Digital root of 30363 =
  37. 37.Digital root of 93684 =
  38. 38.Digital root of 57 × 79 =
  39. 39.Digital root of 31 × 14 =
  40. 40.Digital root of 50 × 68 =

Answer key

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

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