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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 252 · 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 91 × 49 =
  2. 2.Digital root of 84 × 67 =
  3. 3.Digital root of 22490 =
  4. 4.Digital root of 74662 =
  5. 5.Digital root of 20 × 15 =
  6. 6.Digital root of 31093 =
  7. 7.Digital root of 9030 =
  8. 8.Digital root of 22826 =
  9. 9.Digital root of 21877 =
  10. 10.Digital root of 79 × 69 =
  11. 11.Digital root of 26 × 16 =
  12. 12.Digital root of 31 × 94 =
  13. 13.Digital root of 49049 =
  14. 14.Digital root of 33018 =
  15. 15.Digital root of 95127 =
  16. 16.Digital root of 89535 =
  17. 17.Digital root of 22 × 21 =
  18. 18.Digital root of 47555 =
  19. 19.Digital root of 6408 =
  20. 20.Digital root of 503 =
  21. 21.Digital root of 52399 =
  22. 22.Digital root of 29 × 34 =
  23. 23.Digital root of 31128 =
  24. 24.Digital root of 36 × 50 =
  25. 25.Digital root of 1102 =
  26. 26.Digital root of 66 × 50 =
  27. 27.Digital root of 54881 =
  28. 28.Digital root of 50 × 86 =
  29. 29.Digital root of 1613 =
  30. 30.Digital root of 14 × 30 =
  31. 31.Digital root of 36 × 23 =
  32. 32.Digital root of 19 × 78 =
  33. 33.Digital root of 19179 =
  34. 34.Digital root of 90 × 31 =
  35. 35.Digital root of 48 × 43 =
  36. 36.Digital root of 4951 =
  37. 37.Digital root of 55730 =
  38. 38.Digital root of 96 × 75 =
  39. 39.Digital root of 15 × 94 =
  40. 40.Digital root of 74 × 64 =

Answer key

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

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