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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 497 · 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. 2.991 × 999 =
  3. 3.2 × 9 =
  4. 4.12 × 99 =
  5. 5.177 × 9 =
  6. 6.7 × 99 =
  7. 7.145 × 9 =
  8. 8.4 × 9 =
  9. 9.963 × 999 =
  10. 10.8 × 9 =
  11. 11.98 × 99 =
  12. 12.182 × 9 =
  13. 13.659 × 999 =
  14. 14.7 × 9 =
  15. 15.59 × 99 =
  16. 16.11 × 99 =
  17. 17.8 × 9 =
  18. 18.771 × 999 =
  19. 19.4 × 9 =
  20. 20.27652 × 999 =
  21. 21.18 × 999 =
  22. 22.7 × 9 =
  23. 23.16541 × 999 =
  24. 24.694 × 999 =
  25. 25.24134 × 999 =
  26. 26.841 × 999 =
  27. 27.27949 × 999 =
  28. 28.44 × 99 =
  29. 29.96 × 99 =
  30. 30.8 × 9 =
  31. 31.59 × 99 =
  32. 32.5 × 9 =
  33. 33.1679 × 99 =
  34. 34.3 × 9 =
  35. 35.3 × 9 =
  36. 36.64 × 9 =
  37. 37.4 × 9 =
  38. 38.23 × 99 =
  39. 39.7 × 999 =
  40. 40.236 × 9 =

Answer key

  1. 54
  2. 990009
  3. 18
  4. 1188
  5. 1593
  6. 693
  7. 1305
  8. 36
  9. 962037
  10. 72
  11. 9702
  12. 1638
  13. 658341
  14. 63
  15. 5841
  16. 1089
  17. 72
  18. 770229
  19. 36
  20. 27624348
  21. 17982
  22. 63
  23. 16524459
  24. 693306
  25. 24109866
  26. 840159
  27. 27921051
  28. 4356
  29. 9504
  30. 72
  31. 5841
  32. 45
  33. 166221
  34. 27
  35. 27
  36. 576
  37. 36
  38. 2277
  39. 6993
  40. 2124

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