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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 427 · 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. 1.45 × 9 =
  2. 2.3 × 9 =
  3. 3.121 × 999 =
  4. 4.3 × 9 =
  5. 5.176 × 9 =
  6. 6.3 × 9 =
  7. 7.251 × 9 =
  8. 8.8 × 9 =
  9. 9.856 × 99 =
  10. 10.851 × 999 =
  11. 11.64 × 99 =
  12. 12.366 × 999 =
  13. 13.5728 × 999 =
  14. 14.145 × 999 =
  15. 15.937 × 99 =
  16. 16.311 × 999 =
  17. 17.8 × 9 =
  18. 18.45 × 9 =
  19. 19.8 × 99 =
  20. 20.161 × 9 =
  21. 21.157 × 9 =
  22. 22.8 × 9 =
  23. 23.8 × 9 =
  24. 24.5 × 9 =
  25. 25.21 × 999 =
  26. 26.78 × 99 =
  27. 27.74 × 999 =
  28. 28.3 × 9 =
  29. 29.865 × 99 =
  30. 30.458 × 99 =
  31. 31.965 × 999 =
  32. 32.131 × 9 =
  33. 33.423 × 999 =
  34. 34.61 × 999 =
  35. 35.21 × 9 =
  36. 36.96 × 999 =
  37. 37.13 × 99 =
  38. 38.1044 × 99 =
  39. 39.2406 × 99 =
  40. 40.4 × 9 =

Answer key

  1. 405
  2. 27
  3. 120879
  4. 27
  5. 1584
  6. 27
  7. 2259
  8. 72
  9. 84744
  10. 850149
  11. 6336
  12. 365634
  13. 5722272
  14. 144855
  15. 92763
  16. 310689
  17. 72
  18. 405
  19. 792
  20. 1449
  21. 1413
  22. 72
  23. 72
  24. 45
  25. 20979
  26. 7722
  27. 73926
  28. 27
  29. 85635
  30. 45342
  31. 964035
  32. 1179
  33. 422577
  34. 60939
  35. 189
  36. 95904
  37. 1287
  38. 103356
  39. 238194
  40. 36

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