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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 887 · 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 31117 =
  2. 2.Digital root of 29 × 85 =
  3. 3.Digital root of 33 × 56 =
  4. 4.Digital root of 14 × 88 =
  5. 5.Digital root of 30031 =
  6. 6.Digital root of 43 × 65 =
  7. 7.Digital root of 26 × 19 =
  8. 8.Digital root of 84745 =
  9. 9.Digital root of 31998 =
  10. 10.Digital root of 71930 =
  11. 11.Digital root of 1310 =
  12. 12.Digital root of 45 × 48 =
  13. 13.Digital root of 22695 =
  14. 14.Digital root of 60147 =
  15. 15.Digital root of 2227 =
  16. 16.Digital root of 37581 =
  17. 17.Digital root of 96148 =
  18. 18.Digital root of 53310 =
  19. 19.Digital root of 56 × 69 =
  20. 20.Digital root of 77 × 69 =
  21. 21.Digital root of 37 × 90 =
  22. 22.Digital root of 60 × 28 =
  23. 23.Digital root of 77574 =
  24. 24.Digital root of 23235 =
  25. 25.Digital root of 83 × 19 =
  26. 26.Digital root of 65 × 30 =
  27. 27.Digital root of 35 × 59 =
  28. 28.Digital root of 94366 =
  29. 29.Digital root of 22 × 63 =
  30. 30.Digital root of 90 × 32 =
  31. 31.Digital root of 68 × 55 =
  32. 32.Digital root of 88 × 28 =
  33. 33.Digital root of 28 × 99 =
  34. 34.Digital root of 19 × 16 =
  35. 35.Digital root of 80678 =
  36. 36.Digital root of 95 × 59 =
  37. 37.Digital root of 6190 =
  38. 38.Digital root of 3379 =
  39. 39.Digital root of 28092 =
  40. 40.Digital root of 69744 =

Answer key

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

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