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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 713 · 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. 1.783 × 999 =
  2. 2.429 × 999 =
  3. 3.91 × 99 =
  4. 4.8 × 9 =
  5. 5.6 × 9 =
  6. 6.5564 × 999 =
  7. 7.89 × 99 =
  8. 8.92 × 99 =
  9. 9.802 × 999 =
  10. 10.46 × 99 =
  11. 11.26 × 99 =
  12. 12.5 × 9 =
  13. 13.241 × 9 =
  14. 14.15571 × 999 =
  15. 15.6 × 9 =
  16. 16.975 × 999 =
  17. 17.315 × 999 =
  18. 18.81 × 9 =
  19. 19.41 × 99 =
  20. 20.24405 × 999 =
  21. 21.67 × 99 =
  22. 22.11011 × 999 =
  23. 23.23 × 9 =
  24. 24.7 × 9 =
  25. 25.5 × 9 =
  26. 26.59 × 99 =
  27. 27.71 × 99 =
  28. 28.6 × 9 =
  29. 29.541 × 99 =
  30. 30.291 × 99 =
  31. 31.77 × 999 =
  32. 32.2 × 99 =
  33. 33.42 × 99 =
  34. 34.8 × 9 =
  35. 35.593 × 999 =
  36. 36.434 × 999 =
  37. 37.3 × 9 =
  38. 38.5 × 99 =
  39. 39.31 × 99 =
  40. 40.653 × 999 =

Answer key

  1. 782217
  2. 428571
  3. 9009
  4. 72
  5. 54
  6. 5558436
  7. 8811
  8. 9108
  9. 801198
  10. 4554
  11. 2574
  12. 45
  13. 2169
  14. 15555429
  15. 54
  16. 974025
  17. 314685
  18. 729
  19. 4059
  20. 24380595
  21. 6633
  22. 10999989
  23. 207
  24. 63
  25. 45
  26. 5841
  27. 7029
  28. 54
  29. 53559
  30. 28809
  31. 76923
  32. 198
  33. 4158
  34. 72
  35. 592407
  36. 433566
  37. 27
  38. 495
  39. 3069
  40. 652347

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