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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 968 · 40 sums
TalentJR

The trick (Ekanyunena Purvena): Write the number with as many digits as there are nines (add zeros in front if needed). Left part: the number minus 1. Right part: “all from 9 and the last from 10” of the number. More digits than the nines (237 × 99)? Split off as many digits as there are nines (2 | 37): left = number − (front part + 1) = 234, right = complement of 37 = 63 → 23463.

NameDateTime takenScore ___ / 40
  1. 1.11 × 99 =
  2. 2.49 × 99 =
  3. 3.5 × 999 =
  4. 4.16123 × 999 =
  5. 5.11 × 99 =
  6. 6.427 × 999 =
  7. 7.74 × 99 =
  8. 8.256 × 9 =
  9. 9.188 × 999 =
  10. 10.131 × 999 =
  11. 11.9 × 99 =
  12. 12.29149 × 999 =
  13. 13.58 × 99 =
  14. 14.48 × 9 =
  15. 15.183 × 999 =
  16. 16.4 × 9 =
  17. 17.98 × 99 =
  18. 18.5 × 9 =
  19. 19.209 × 9 =
  20. 20.8 × 9 =
  21. 21.21 × 999 =
  22. 22.27123 × 999 =
  23. 23.2 × 9 =
  24. 24.974 × 999 =
  25. 25.45 × 99 =
  26. 26.8 × 9 =
  27. 27.6 × 99 =
  28. 28.39 × 99 =
  29. 29.637 × 999 =
  30. 30.45 × 999 =
  31. 31.169 × 99 =
  32. 32.3 × 99 =
  33. 33.2 × 9 =
  34. 34.61 × 99 =
  35. 35.2 × 9 =
  36. 36.31 × 99 =
  37. 37.901 × 999 =
  38. 38.262 × 999 =
  39. 39.9911 × 999 =
  40. 40.3 × 9 =

Answer key

  1. 1089
  2. 4851
  3. 4995
  4. 16106877
  5. 1089
  6. 426573
  7. 7326
  8. 2304
  9. 187812
  10. 130869
  11. 891
  12. 29119851
  13. 5742
  14. 432
  15. 182817
  16. 36
  17. 9702
  18. 45
  19. 1881
  20. 72
  21. 20979
  22. 27095877
  23. 18
  24. 973026
  25. 4455
  26. 72
  27. 594
  28. 3861
  29. 636363
  30. 44955
  31. 16731
  32. 297
  33. 18
  34. 6039
  35. 18
  36. 3069
  37. 900099
  38. 261738
  39. 9901089
  40. 27

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