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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 181 · 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 55 × 82 =
  2. 2.Digital root of 72789 =
  3. 3.Digital root of 89 × 52 =
  4. 4.Digital root of 43949 =
  5. 5.Digital root of 89 × 39 =
  6. 6.Digital root of 43560 =
  7. 7.Digital root of 63 × 83 =
  8. 8.Digital root of 90449 =
  9. 9.Digital root of 67119 =
  10. 10.Digital root of 53693 =
  11. 11.Digital root of 44191 =
  12. 12.Digital root of 36898 =
  13. 13.Digital root of 17 × 67 =
  14. 14.Digital root of 18 × 31 =
  15. 15.Digital root of 41 × 38 =
  16. 16.Digital root of 95354 =
  17. 17.Digital root of 88 × 25 =
  18. 18.Digital root of 1678 =
  19. 19.Digital root of 37655 =
  20. 20.Digital root of 62308 =
  21. 21.Digital root of 65 × 91 =
  22. 22.Digital root of 39417 =
  23. 23.Digital root of 95045 =
  24. 24.Digital root of 79946 =
  25. 25.Digital root of 59693 =
  26. 26.Digital root of 37331 =
  27. 27.Digital root of 41 × 47 =
  28. 28.Digital root of 48 × 31 =
  29. 29.Digital root of 12 × 68 =
  30. 30.Digital root of 42362 =
  31. 31.Digital root of 61507 =
  32. 32.Digital root of 37 × 64 =
  33. 33.Digital root of 78163 =
  34. 34.Digital root of 76409 =
  35. 35.Digital root of 40 × 24 =
  36. 36.Digital root of 65883 =
  37. 37.Digital root of 96488 =
  38. 38.Digital root of 53498 =
  39. 39.Digital root of 31 × 77 =
  40. 40.Digital root of 32 × 93 =

Answer key

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

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