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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 355 · 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. 1.26 × 99 =
  2. 2.8 × 9 =
  3. 3.5 × 99 =
  4. 4.177 × 999 =
  5. 5.84 × 99 =
  6. 6.19269 × 999 =
  7. 7.5 × 9 =
  8. 8.341 × 999 =
  9. 9.6 × 9 =
  10. 10.692 × 999 =
  11. 11.3 × 9 =
  12. 12.546 × 99 =
  13. 13.95 × 99 =
  14. 14.24783 × 999 =
  15. 15.8 × 9 =
  16. 16.82 × 99 =
  17. 17.316 × 999 =
  18. 18.8116 × 999 =
  19. 19.5869 × 999 =
  20. 20.1871 × 99 =
  21. 21.19 × 99 =
  22. 22.6 × 9 =
  23. 23.96 × 99 =
  24. 24.41 × 9 =
  25. 25.77 × 99 =
  26. 26.4 × 9 =
  27. 27.6 × 9 =
  28. 28.797 × 999 =
  29. 29.58 × 99 =
  30. 30.5671 × 999 =
  31. 31.263 × 999 =
  32. 32.153 × 9 =
  33. 33.685 × 999 =
  34. 34.1923 × 99 =
  35. 35.81 × 999 =
  36. 36.7 × 9 =
  37. 37.399 × 999 =
  38. 38.467 × 999 =
  39. 39.10724 × 999 =
  40. 40.81 × 99 =

Answer key

  1. 2574
  2. 72
  3. 495
  4. 176823
  5. 8316
  6. 19249731
  7. 45
  8. 340659
  9. 54
  10. 691308
  11. 27
  12. 54054
  13. 9405
  14. 24758217
  15. 72
  16. 8118
  17. 315684
  18. 8107884
  19. 5863131
  20. 185229
  21. 1881
  22. 54
  23. 9504
  24. 369
  25. 7623
  26. 36
  27. 54
  28. 796203
  29. 5742
  30. 5665329
  31. 262737
  32. 1377
  33. 684315
  34. 190377
  35. 80919
  36. 63
  37. 398601
  38. 466533
  39. 10713276
  40. 8019

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