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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 830 · 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 40 × 47 =
  2. 2.Digital root of 63794 =
  3. 3.Digital root of 29 × 48 =
  4. 4.Digital root of 56 × 40 =
  5. 5.Digital root of 60 × 36 =
  6. 6.Digital root of 96846 =
  7. 7.Digital root of 19 × 76 =
  8. 8.Digital root of 29 × 53 =
  9. 9.Digital root of 63 × 78 =
  10. 10.Digital root of 50 × 35 =
  11. 11.Digital root of 18 × 62 =
  12. 12.Digital root of 4948 =
  13. 13.Digital root of 85317 =
  14. 14.Digital root of 88 × 66 =
  15. 15.Digital root of 35286 =
  16. 16.Digital root of 63731 =
  17. 17.Digital root of 9576 =
  18. 18.Digital root of 65969 =
  19. 19.Digital root of 34 × 46 =
  20. 20.Digital root of 31371 =
  21. 21.Digital root of 55909 =
  22. 22.Digital root of 66 × 73 =
  23. 23.Digital root of 81352 =
  24. 24.Digital root of 28982 =
  25. 25.Digital root of 26 × 24 =
  26. 26.Digital root of 79 × 54 =
  27. 27.Digital root of 2872 =
  28. 28.Digital root of 71350 =
  29. 29.Digital root of 57 × 39 =
  30. 30.Digital root of 4888 =
  31. 31.Digital root of 4411 =
  32. 32.Digital root of 2023 =
  33. 33.Digital root of 13100 =
  34. 34.Digital root of 32 × 36 =
  35. 35.Digital root of 45 × 55 =
  36. 36.Digital root of 27522 =
  37. 37.Digital root of 47 × 92 =
  38. 38.Digital root of 20746 =
  39. 39.Digital root of 202 =
  40. 40.Digital root of 74828 =

Answer key

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

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