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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 52 · 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. 1.438 × 999 =
  2. 2.791 × 99 =
  3. 3.6 × 9 =
  4. 4.524 × 999 =
  5. 5.3 × 9 =
  6. 6.8 × 9 =
  7. 7.433 × 999 =
  8. 8.38 × 9 =
  9. 9.8 × 9 =
  10. 10.131 × 9 =
  11. 11.721 × 999 =
  12. 12.7 × 9 =
  13. 13.3 × 99 =
  14. 14.88 × 9 =
  15. 15.185 × 999 =
  16. 16.8 × 9 =
  17. 17.7 × 99 =
  18. 18.9033 × 999 =
  19. 19.661 × 999 =
  20. 20.2 × 9 =
  21. 21.841 × 999 =
  22. 22.695 × 99 =
  23. 23.4 × 9 =
  24. 24.66 × 99 =
  25. 25.51 × 9 =
  26. 26.4 × 9 =
  27. 27.71 × 99 =
  28. 28.42 × 99 =
  29. 29.133 × 9 =
  30. 30.165 × 999 =
  31. 31.6 × 9 =
  32. 32.244 × 9 =
  33. 33.3 × 9 =
  34. 34.1235 × 999 =
  35. 35.476 × 999 =
  36. 36.216 × 99 =
  37. 37.7 × 9 =
  38. 38.2273 × 99 =
  39. 39.497 × 99 =
  40. 40.22267 × 999 =

Answer key

  1. 437562
  2. 78309
  3. 54
  4. 523476
  5. 27
  6. 72
  7. 432567
  8. 342
  9. 72
  10. 1179
  11. 720279
  12. 63
  13. 297
  14. 792
  15. 184815
  16. 72
  17. 693
  18. 9023967
  19. 660339
  20. 18
  21. 840159
  22. 68805
  23. 36
  24. 6534
  25. 459
  26. 36
  27. 7029
  28. 4158
  29. 1197
  30. 164835
  31. 54
  32. 2196
  33. 27
  34. 1233765
  35. 475524
  36. 21384
  37. 63
  38. 225027
  39. 49203
  40. 22244733

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