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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 516 · 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. 1.7648 × 999 =
  2. 2.6 × 9 =
  3. 3.107 × 99 =
  4. 4.1923 × 99 =
  5. 5.77 × 99 =
  6. 6.79 × 9 =
  7. 7.11604 × 999 =
  8. 8.3 × 99 =
  9. 9.916 × 999 =
  10. 10.578 × 999 =
  11. 11.5 × 9 =
  12. 12.75 × 999 =
  13. 13.74 × 9 =
  14. 14.4 × 9 =
  15. 15.12874 × 999 =
  16. 16.177 × 999 =
  17. 17.29226 × 999 =
  18. 18.15 × 99 =
  19. 19.66 × 99 =
  20. 20.998 × 999 =
  21. 21.11187 × 999 =
  22. 22.231 × 9 =
  23. 23.5 × 9 =
  24. 24.78 × 99 =
  25. 25.2 × 9 =
  26. 26.637 × 999 =
  27. 27.6 × 9 =
  28. 28.28095 × 999 =
  29. 29.727 × 999 =
  30. 30.5 × 9 =
  31. 31.3 × 9 =
  32. 32.214 × 9 =
  33. 33.1641 × 99 =
  34. 34.842 × 999 =
  35. 35.1541 × 99 =
  36. 36.95 × 99 =
  37. 37.36 × 99 =
  38. 38.3 × 9 =
  39. 39.8 × 9 =
  40. 40.24297 × 999 =

Answer key

  1. 7640352
  2. 54
  3. 10593
  4. 190377
  5. 7623
  6. 711
  7. 11592396
  8. 297
  9. 915084
  10. 577422
  11. 45
  12. 74925
  13. 666
  14. 36
  15. 12861126
  16. 176823
  17. 29196774
  18. 1485
  19. 6534
  20. 997002
  21. 11175813
  22. 2079
  23. 45
  24. 7722
  25. 18
  26. 636363
  27. 54
  28. 28066905
  29. 726273
  30. 45
  31. 27
  32. 1926
  33. 162459
  34. 841158
  35. 152559
  36. 9405
  37. 3564
  38. 27
  39. 72
  40. 24272703

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