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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 206 · 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 96 × 28 =
  2. 2.Digital root of 78760 =
  3. 3.Digital root of 20207 =
  4. 4.Digital root of 71 × 88 =
  5. 5.Digital root of 78 × 26 =
  6. 6.Digital root of 85747 =
  7. 7.Digital root of 13 × 79 =
  8. 8.Digital root of 34 × 62 =
  9. 9.Digital root of 49360 =
  10. 10.Digital root of 28010 =
  11. 11.Digital root of 96 × 29 =
  12. 12.Digital root of 69 × 58 =
  13. 13.Digital root of 97462 =
  14. 14.Digital root of 82 × 21 =
  15. 15.Digital root of 35998 =
  16. 16.Digital root of 91595 =
  17. 17.Digital root of 74035 =
  18. 18.Digital root of 35087 =
  19. 19.Digital root of 77 × 71 =
  20. 20.Digital root of 8134 =
  21. 21.Digital root of 98 × 40 =
  22. 22.Digital root of 40 × 65 =
  23. 23.Digital root of 29302 =
  24. 24.Digital root of 91353 =
  25. 25.Digital root of 70 × 39 =
  26. 26.Digital root of 32716 =
  27. 27.Digital root of 33 × 22 =
  28. 28.Digital root of 93308 =
  29. 29.Digital root of 27 × 22 =
  30. 30.Digital root of 17745 =
  31. 31.Digital root of 32 × 84 =
  32. 32.Digital root of 24 × 74 =
  33. 33.Digital root of 80 × 20 =
  34. 34.Digital root of 75136 =
  35. 35.Digital root of 51078 =
  36. 36.Digital root of 62 × 79 =
  37. 37.Digital root of 68 × 82 =
  38. 38.Digital root of 93 × 62 =
  39. 39.Digital root of 91790 =
  40. 40.Digital root of 31 × 90 =

Answer key

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

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