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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 142 · 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. 1.44 × 99 =
  2. 2.495 × 999 =
  3. 3.3 × 9 =
  4. 4.29 × 9 =
  5. 5.551 × 999 =
  6. 6.41 × 99 =
  7. 7.5627 × 999 =
  8. 8.66 × 99 =
  9. 9.214 × 999 =
  10. 10.1828 × 99 =
  11. 11.356 × 999 =
  12. 12.321 × 999 =
  13. 13.84 × 99 =
  14. 14.6 × 9 =
  15. 15.7 × 9 =
  16. 16.2 × 9 =
  17. 17.6 × 99 =
  18. 18.7 × 9 =
  19. 19.71 × 99 =
  20. 20.119 × 9 =
  21. 21.5426 × 999 =
  22. 22.112 × 9 =
  23. 23.611 × 999 =
  24. 24.19 × 9 =
  25. 25.111 × 999 =
  26. 26.10291 × 999 =
  27. 27.226 × 9 =
  28. 28.21 × 99 =
  29. 29.3 × 9 =
  30. 30.6 × 9 =
  31. 31.154 × 9 =
  32. 32.721 × 99 =
  33. 33.7 × 9 =
  34. 34.45 × 99 =
  35. 35.20887 × 999 =
  36. 36.724 × 999 =
  37. 37.2 × 9 =
  38. 38.22282 × 999 =
  39. 39.4731 × 999 =
  40. 40.8 × 9 =

Answer key

  1. 4356
  2. 494505
  3. 27
  4. 261
  5. 550449
  6. 4059
  7. 5621373
  8. 6534
  9. 213786
  10. 180972
  11. 355644
  12. 320679
  13. 8316
  14. 54
  15. 63
  16. 18
  17. 594
  18. 63
  19. 7029
  20. 1071
  21. 5420574
  22. 1008
  23. 610389
  24. 171
  25. 110889
  26. 10280709
  27. 2034
  28. 2079
  29. 27
  30. 54
  31. 1386
  32. 71379
  33. 63
  34. 4455
  35. 20866113
  36. 723276
  37. 18
  38. 22259718
  39. 4726269
  40. 72

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