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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 744 · 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. 1.5 × 9 =
  2. 2.101 × 9 =
  3. 3.54 × 9 =
  4. 4.255 × 9 =
  5. 5.17698 × 999 =
  6. 6.2 × 9 =
  7. 7.117 × 9 =
  8. 8.547 × 99 =
  9. 9.5 × 9 =
  10. 10.8 × 9 =
  11. 11.3 × 9 =
  12. 12.318 × 999 =
  13. 13.8 × 9 =
  14. 14.7 × 9 =
  15. 15.22 × 99 =
  16. 16.1229 × 99 =
  17. 17.957 × 999 =
  18. 18.258 × 999 =
  19. 19.466 × 999 =
  20. 20.835 × 999 =
  21. 21.7 × 9 =
  22. 22.37 × 999 =
  23. 23.1332 × 99 =
  24. 24.481 × 999 =
  25. 25.7 × 9 =
  26. 26.8 × 9 =
  27. 27.313 × 999 =
  28. 28.348 × 999 =
  29. 29.81 × 99 =
  30. 30.2 × 9 =
  31. 31.83 × 99 =
  32. 32.502 × 99 =
  33. 33.1054 × 99 =
  34. 34.185 × 9 =
  35. 35.979 × 999 =
  36. 36.5 × 9 =
  37. 37.58 × 99 =
  38. 38.15 × 99 =
  39. 39.55 × 99 =
  40. 40.3 × 9 =

Answer key

  1. 45
  2. 909
  3. 486
  4. 2295
  5. 17680302
  6. 18
  7. 1053
  8. 54153
  9. 45
  10. 72
  11. 27
  12. 317682
  13. 72
  14. 63
  15. 2178
  16. 121671
  17. 956043
  18. 257742
  19. 465534
  20. 834165
  21. 63
  22. 36963
  23. 131868
  24. 480519
  25. 63
  26. 72
  27. 312687
  28. 347652
  29. 8019
  30. 18
  31. 8217
  32. 49698
  33. 104346
  34. 1665
  35. 978021
  36. 45
  37. 5742
  38. 1485
  39. 5445
  40. 27

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