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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 650 · 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 95 × 13 =
  2. 2.Digital root of 39 × 60 =
  3. 3.Digital root of 17 × 40 =
  4. 4.Digital root of 85562 =
  5. 5.Digital root of 47 × 19 =
  6. 6.Digital root of 88 × 72 =
  7. 7.Digital root of 81147 =
  8. 8.Digital root of 20 × 73 =
  9. 9.Digital root of 72 × 14 =
  10. 10.Digital root of 50650 =
  11. 11.Digital root of 39669 =
  12. 12.Digital root of 54 × 35 =
  13. 13.Digital root of 88 × 64 =
  14. 14.Digital root of 40 × 54 =
  15. 15.Digital root of 63778 =
  16. 16.Digital root of 87588 =
  17. 17.Digital root of 59 × 17 =
  18. 18.Digital root of 9960 =
  19. 19.Digital root of 66030 =
  20. 20.Digital root of 33 × 94 =
  21. 21.Digital root of 44 × 38 =
  22. 22.Digital root of 78 × 77 =
  23. 23.Digital root of 31583 =
  24. 24.Digital root of 48493 =
  25. 25.Digital root of 53 × 92 =
  26. 26.Digital root of 7252 =
  27. 27.Digital root of 644 =
  28. 28.Digital root of 96 × 75 =
  29. 29.Digital root of 50417 =
  30. 30.Digital root of 32 × 71 =
  31. 31.Digital root of 89 × 68 =
  32. 32.Digital root of 26922 =
  33. 33.Digital root of 16 × 79 =
  34. 34.Digital root of 18 × 53 =
  35. 35.Digital root of 76 × 55 =
  36. 36.Digital root of 46 × 65 =
  37. 37.Digital root of 96 × 93 =
  38. 38.Digital root of 95026 =
  39. 39.Digital root of 54756 =
  40. 40.Digital root of 59412 =

Answer key

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

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