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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 590 · 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 31 × 18 =
  2. 2.Digital root of 67 × 47 =
  3. 3.Digital root of 94 × 23 =
  4. 4.Digital root of 56091 =
  5. 5.Digital root of 80800 =
  6. 6.Digital root of 64 × 17 =
  7. 7.Digital root of 44741 =
  8. 8.Digital root of 16235 =
  9. 9.Digital root of 12 × 81 =
  10. 10.Digital root of 65 × 12 =
  11. 11.Digital root of 58 × 17 =
  12. 12.Digital root of 74 × 87 =
  13. 13.Digital root of 53269 =
  14. 14.Digital root of 24 × 45 =
  15. 15.Digital root of 22 × 92 =
  16. 16.Digital root of 32 × 75 =
  17. 17.Digital root of 1783 =
  18. 18.Digital root of 54613 =
  19. 19.Digital root of 98 × 34 =
  20. 20.Digital root of 95 × 20 =
  21. 21.Digital root of 52 × 73 =
  22. 22.Digital root of 26436 =
  23. 23.Digital root of 31 × 25 =
  24. 24.Digital root of 75 × 22 =
  25. 25.Digital root of 53377 =
  26. 26.Digital root of 83029 =
  27. 27.Digital root of 55 × 71 =
  28. 28.Digital root of 61116 =
  29. 29.Digital root of 83 × 22 =
  30. 30.Digital root of 96 × 79 =
  31. 31.Digital root of 60 × 61 =
  32. 32.Digital root of 26643 =
  33. 33.Digital root of 38032 =
  34. 34.Digital root of 32 × 55 =
  35. 35.Digital root of 79 × 80 =
  36. 36.Digital root of 82460 =
  37. 37.Digital root of 85299 =
  38. 38.Digital root of 67501 =
  39. 39.Digital root of 24425 =
  40. 40.Digital root of 58444 =

Answer key

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

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