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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 135 · 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 32 × 99 =
  2. 2.Digital root of 17138 =
  3. 3.Digital root of 78 × 60 =
  4. 4.Digital root of 98 × 35 =
  5. 5.Digital root of 83 × 67 =
  6. 6.Digital root of 28 × 40 =
  7. 7.Digital root of 78239 =
  8. 8.Digital root of 50 × 77 =
  9. 9.Digital root of 28268 =
  10. 10.Digital root of 7250 =
  11. 11.Digital root of 23252 =
  12. 12.Digital root of 31736 =
  13. 13.Digital root of 3322 =
  14. 14.Digital root of 69992 =
  15. 15.Digital root of 61 × 63 =
  16. 16.Digital root of 98636 =
  17. 17.Digital root of 27 × 29 =
  18. 18.Digital root of 62766 =
  19. 19.Digital root of 88 × 13 =
  20. 20.Digital root of 86 × 94 =
  21. 21.Digital root of 1765 =
  22. 22.Digital root of 49636 =
  23. 23.Digital root of 15 × 35 =
  24. 24.Digital root of 53082 =
  25. 25.Digital root of 68218 =
  26. 26.Digital root of 63 × 69 =
  27. 27.Digital root of 42 × 85 =
  28. 28.Digital root of 37 × 62 =
  29. 29.Digital root of 7990 =
  30. 30.Digital root of 53961 =
  31. 31.Digital root of 35 × 65 =
  32. 32.Digital root of 96 × 40 =
  33. 33.Digital root of 47 × 24 =
  34. 34.Digital root of 1827 =
  35. 35.Digital root of 88347 =
  36. 36.Digital root of 55 × 21 =
  37. 37.Digital root of 49463 =
  38. 38.Digital root of 72 × 58 =
  39. 39.Digital root of 75961 =
  40. 40.Digital root of 7991 =

Answer key

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

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