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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 148 · 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 12873 =
  2. 2.Digital root of 9778 =
  3. 3.Digital root of 57 × 28 =
  4. 4.Digital root of 87 × 14 =
  5. 5.Digital root of 13548 =
  6. 6.Digital root of 24379 =
  7. 7.Digital root of 12780 =
  8. 8.Digital root of 99293 =
  9. 9.Digital root of 18 × 97 =
  10. 10.Digital root of 57494 =
  11. 11.Digital root of 97877 =
  12. 12.Digital root of 77891 =
  13. 13.Digital root of 52 × 48 =
  14. 14.Digital root of 22419 =
  15. 15.Digital root of 19 × 12 =
  16. 16.Digital root of 87049 =
  17. 17.Digital root of 15220 =
  18. 18.Digital root of 68011 =
  19. 19.Digital root of 31283 =
  20. 20.Digital root of 66 × 16 =
  21. 21.Digital root of 48 × 51 =
  22. 22.Digital root of 87116 =
  23. 23.Digital root of 45113 =
  24. 24.Digital root of 51 × 76 =
  25. 25.Digital root of 31 × 56 =
  26. 26.Digital root of 32266 =
  27. 27.Digital root of 70 × 35 =
  28. 28.Digital root of 78 × 91 =
  29. 29.Digital root of 35979 =
  30. 30.Digital root of 70 × 52 =
  31. 31.Digital root of 93 × 39 =
  32. 32.Digital root of 79473 =
  33. 33.Digital root of 77810 =
  34. 34.Digital root of 16 × 97 =
  35. 35.Digital root of 33862 =
  36. 36.Digital root of 72600 =
  37. 37.Digital root of 92194 =
  38. 38.Digital root of 96 × 78 =
  39. 39.Digital root of 71610 =
  40. 40.Digital root of 51622 =

Answer key

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

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