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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 559 · 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 56 × 57 =
  2. 2.Digital root of 52293 =
  3. 3.Digital root of 67473 =
  4. 4.Digital root of 20 × 79 =
  5. 5.Digital root of 15098 =
  6. 6.Digital root of 84415 =
  7. 7.Digital root of 16051 =
  8. 8.Digital root of 84688 =
  9. 9.Digital root of 19 × 96 =
  10. 10.Digital root of 50131 =
  11. 11.Digital root of 55 × 13 =
  12. 12.Digital root of 64 × 15 =
  13. 13.Digital root of 77342 =
  14. 14.Digital root of 5337 =
  15. 15.Digital root of 37362 =
  16. 16.Digital root of 30112 =
  17. 17.Digital root of 7028 =
  18. 18.Digital root of 92106 =
  19. 19.Digital root of 47 × 21 =
  20. 20.Digital root of 51182 =
  21. 21.Digital root of 857 =
  22. 22.Digital root of 22949 =
  23. 23.Digital root of 38901 =
  24. 24.Digital root of 49 × 53 =
  25. 25.Digital root of 10498 =
  26. 26.Digital root of 76 × 34 =
  27. 27.Digital root of 98 × 12 =
  28. 28.Digital root of 72235 =
  29. 29.Digital root of 14 × 52 =
  30. 30.Digital root of 20 × 21 =
  31. 31.Digital root of 66018 =
  32. 32.Digital root of 68563 =
  33. 33.Digital root of 19 × 18 =
  34. 34.Digital root of 32 × 27 =
  35. 35.Digital root of 31 × 35 =
  36. 36.Digital root of 36 × 90 =
  37. 37.Digital root of 23 × 40 =
  38. 38.Digital root of 97152 =
  39. 39.Digital root of 56334 =
  40. 40.Digital root of 81087 =

Answer key

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

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