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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 265 · 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 20947 =
  2. 2.Digital root of 18199 =
  3. 3.Digital root of 45405 =
  4. 4.Digital root of 65 × 14 =
  5. 5.Digital root of 85912 =
  6. 6.Digital root of 1112 =
  7. 7.Digital root of 5888 =
  8. 8.Digital root of 84291 =
  9. 9.Digital root of 45473 =
  10. 10.Digital root of 21 × 67 =
  11. 11.Digital root of 16 × 98 =
  12. 12.Digital root of 46 × 32 =
  13. 13.Digital root of 60 × 24 =
  14. 14.Digital root of 38945 =
  15. 15.Digital root of 88 × 97 =
  16. 16.Digital root of 44 × 24 =
  17. 17.Digital root of 31060 =
  18. 18.Digital root of 76220 =
  19. 19.Digital root of 58690 =
  20. 20.Digital root of 36836 =
  21. 21.Digital root of 16532 =
  22. 22.Digital root of 94092 =
  23. 23.Digital root of 79937 =
  24. 24.Digital root of 43 × 45 =
  25. 25.Digital root of 73489 =
  26. 26.Digital root of 72004 =
  27. 27.Digital root of 11256 =
  28. 28.Digital root of 90 × 51 =
  29. 29.Digital root of 36 × 92 =
  30. 30.Digital root of 34022 =
  31. 31.Digital root of 21684 =
  32. 32.Digital root of 59 × 68 =
  33. 33.Digital root of 9778 =
  34. 34.Digital root of 55 × 51 =
  35. 35.Digital root of 48 × 46 =
  36. 36.Digital root of 9777 =
  37. 37.Digital root of 37513 =
  38. 38.Digital root of 46684 =
  39. 39.Digital root of 45 × 71 =
  40. 40.Digital root of 43 × 13 =

Answer key

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

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