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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 237 · 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 19 × 20 =
  2. 2.Digital root of 61889 =
  3. 3.Digital root of 13498 =
  4. 4.Digital root of 52 × 29 =
  5. 5.Digital root of 84968 =
  6. 6.Digital root of 16573 =
  7. 7.Digital root of 24 × 69 =
  8. 8.Digital root of 10586 =
  9. 9.Digital root of 68 × 94 =
  10. 10.Digital root of 94 × 83 =
  11. 11.Digital root of 90 × 12 =
  12. 12.Digital root of 50 × 48 =
  13. 13.Digital root of 13 × 50 =
  14. 14.Digital root of 48216 =
  15. 15.Digital root of 66931 =
  16. 16.Digital root of 19100 =
  17. 17.Digital root of 49024 =
  18. 18.Digital root of 85532 =
  19. 19.Digital root of 32 × 35 =
  20. 20.Digital root of 57960 =
  21. 21.Digital root of 37306 =
  22. 22.Digital root of 87 × 51 =
  23. 23.Digital root of 54748 =
  24. 24.Digital root of 49 × 64 =
  25. 25.Digital root of 59 × 38 =
  26. 26.Digital root of 87 × 71 =
  27. 27.Digital root of 31763 =
  28. 28.Digital root of 16 × 43 =
  29. 29.Digital root of 27302 =
  30. 30.Digital root of 99 × 64 =
  31. 31.Digital root of 39593 =
  32. 32.Digital root of 50330 =
  33. 33.Digital root of 39315 =
  34. 34.Digital root of 76345 =
  35. 35.Digital root of 12013 =
  36. 36.Digital root of 19775 =
  37. 37.Digital root of 18 × 82 =
  38. 38.Digital root of 18918 =
  39. 39.Digital root of 23 × 45 =
  40. 40.Digital root of 62 × 63 =

Answer key

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

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