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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 838 · 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 98 × 34 =
  2. 2.Digital root of 21 × 77 =
  3. 3.Digital root of 16 × 13 =
  4. 4.Digital root of 29974 =
  5. 5.Digital root of 67 × 33 =
  6. 6.Digital root of 11932 =
  7. 7.Digital root of 60241 =
  8. 8.Digital root of 58811 =
  9. 9.Digital root of 95 × 44 =
  10. 10.Digital root of 38 × 80 =
  11. 11.Digital root of 22 × 36 =
  12. 12.Digital root of 34 × 23 =
  13. 13.Digital root of 66307 =
  14. 14.Digital root of 53615 =
  15. 15.Digital root of 97 × 88 =
  16. 16.Digital root of 87 × 24 =
  17. 17.Digital root of 65249 =
  18. 18.Digital root of 86838 =
  19. 19.Digital root of 14 × 13 =
  20. 20.Digital root of 86 × 51 =
  21. 21.Digital root of 91 × 22 =
  22. 22.Digital root of 90698 =
  23. 23.Digital root of 90 × 76 =
  24. 24.Digital root of 37 × 36 =
  25. 25.Digital root of 71149 =
  26. 26.Digital root of 87 × 94 =
  27. 27.Digital root of 13 × 97 =
  28. 28.Digital root of 47 × 94 =
  29. 29.Digital root of 39 × 68 =
  30. 30.Digital root of 8421 =
  31. 31.Digital root of 93549 =
  32. 32.Digital root of 78 × 99 =
  33. 33.Digital root of 24055 =
  34. 34.Digital root of 54 × 71 =
  35. 35.Digital root of 98554 =
  36. 36.Digital root of 1855 =
  37. 37.Digital root of 40 × 94 =
  38. 38.Digital root of 64039 =
  39. 39.Digital root of 94 × 39 =
  40. 40.Digital root of 88 × 37 =

Answer key

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

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