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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 523 · 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. 1.1503 × 99 =
  2. 2.27 × 99 =
  3. 3.61 × 99 =
  4. 4.7 × 9 =
  5. 5.251 × 9 =
  6. 6.99 × 9 =
  7. 7.85 × 9 =
  8. 8.8 × 9 =
  9. 9.59 × 9 =
  10. 10.3 × 9 =
  11. 11.101 × 9 =
  12. 12.2476 × 999 =
  13. 13.2727 × 99 =
  14. 14.2632 × 99 =
  15. 15.64 × 9 =
  16. 16.2 × 9 =
  17. 17.95 × 99 =
  18. 18.7 × 9 =
  19. 19.5 × 99 =
  20. 20.8 × 9 =
  21. 21.5 × 9 =
  22. 22.79 × 9 =
  23. 23.575 × 999 =
  24. 24.242 × 999 =
  25. 25.93 × 999 =
  26. 26.94 × 99 =
  27. 27.853 × 999 =
  28. 28.3 × 99 =
  29. 29.65 × 99 =
  30. 30.15 × 9 =
  31. 31.43 × 99 =
  32. 32.15028 × 999 =
  33. 33.8 × 9 =
  34. 34.2672 × 99 =
  35. 35.5 × 9 =
  36. 36.27548 × 999 =
  37. 37.6 × 9 =
  38. 38.212 × 999 =
  39. 39.511 × 999 =
  40. 40.94 × 99 =

Answer key

  1. 148797
  2. 2673
  3. 6039
  4. 63
  5. 2259
  6. 891
  7. 765
  8. 72
  9. 531
  10. 27
  11. 909
  12. 2473524
  13. 269973
  14. 260568
  15. 576
  16. 18
  17. 9405
  18. 63
  19. 495
  20. 72
  21. 45
  22. 711
  23. 574425
  24. 241758
  25. 92907
  26. 9306
  27. 852147
  28. 297
  29. 6435
  30. 135
  31. 4257
  32. 15012972
  33. 72
  34. 264528
  35. 45
  36. 27520452
  37. 54
  38. 211788
  39. 510489
  40. 9306

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