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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 58 · 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. 1.62 × 99 =
  2. 2.6 × 9 =
  3. 3.33 × 99 =
  4. 4.314 × 999 =
  5. 5.35 × 99 =
  6. 6.8 × 9 =
  7. 7.492 × 999 =
  8. 8.642 × 99 =
  9. 9.2 × 9 =
  10. 10.96 × 99 =
  11. 11.241 × 9 =
  12. 12.1443 × 99 =
  13. 13.495 × 999 =
  14. 14.3 × 9 =
  15. 15.1302 × 99 =
  16. 16.75 × 9 =
  17. 17.3 × 99 =
  18. 18.75 × 99 =
  19. 19.24212 × 999 =
  20. 20.8 × 9 =
  21. 21.255 × 9 =
  22. 22.98 × 99 =
  23. 23.8 × 9 =
  24. 24.5 × 9 =
  25. 25.1413 × 99 =
  26. 26.14726 × 999 =
  27. 27.27 × 9 =
  28. 28.329 × 99 =
  29. 29.183 × 9 =
  30. 30.7 × 9 =
  31. 31.2 × 9 =
  32. 32.3 × 9 =
  33. 33.59 × 99 =
  34. 34.7 × 9 =
  35. 35.6 × 9 =
  36. 36.77 × 99 =
  37. 37.2152 × 99 =
  38. 38.647 × 999 =
  39. 39.535 × 999 =
  40. 40.48 × 99 =

Answer key

  1. 6138
  2. 54
  3. 3267
  4. 313686
  5. 3465
  6. 72
  7. 491508
  8. 63558
  9. 18
  10. 9504
  11. 2169
  12. 142857
  13. 494505
  14. 27
  15. 128898
  16. 675
  17. 297
  18. 7425
  19. 24187788
  20. 72
  21. 2295
  22. 9702
  23. 72
  24. 45
  25. 139887
  26. 14711274
  27. 243
  28. 32571
  29. 1647
  30. 63
  31. 18
  32. 27
  33. 5841
  34. 63
  35. 54
  36. 7623
  37. 213048
  38. 646353
  39. 534465
  40. 4752

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