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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 442 · 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. 1.6 × 9 =
  2. 2.52 × 99 =
  3. 3.701 × 99 =
  4. 4.215 × 9 =
  5. 5.167 × 9 =
  6. 6.173 × 999 =
  7. 7.156 × 9 =
  8. 8.57 × 99 =
  9. 9.8006 × 999 =
  10. 10.964 × 999 =
  11. 11.885 × 999 =
  12. 12.74 × 99 =
  13. 13.114 × 9 =
  14. 14.57 × 99 =
  15. 15.82 × 99 =
  16. 16.86 × 99 =
  17. 17.549 × 999 =
  18. 18.3 × 9 =
  19. 19.34 × 999 =
  20. 20.7 × 9 =
  21. 21.1582 × 99 =
  22. 22.61 × 99 =
  23. 23.353 × 99 =
  24. 24.3 × 9 =
  25. 25.593 × 999 =
  26. 26.49 × 9 =
  27. 27.5 × 9 =
  28. 28.188 × 9 =
  29. 29.7 × 9 =
  30. 30.9312 × 999 =
  31. 31.571 × 999 =
  32. 32.14609 × 999 =
  33. 33.2467 × 99 =
  34. 34.96 × 99 =
  35. 35.211 × 9 =
  36. 36.8 × 99 =
  37. 37.1741 × 99 =
  38. 38.162 × 9 =
  39. 39.5 × 9 =
  40. 40.111 × 9 =

Answer key

  1. 54
  2. 5148
  3. 69399
  4. 1935
  5. 1503
  6. 172827
  7. 1404
  8. 5643
  9. 7997994
  10. 963036
  11. 884115
  12. 7326
  13. 1026
  14. 5643
  15. 8118
  16. 8514
  17. 548451
  18. 27
  19. 33966
  20. 63
  21. 156618
  22. 6039
  23. 34947
  24. 27
  25. 592407
  26. 441
  27. 45
  28. 1692
  29. 63
  30. 9302688
  31. 570429
  32. 14594391
  33. 244233
  34. 9504
  35. 1899
  36. 792
  37. 172359
  38. 1458
  39. 45
  40. 999

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