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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 396 · 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. 2.905 × 999 =
  3. 3.95 × 99 =
  4. 4.188 × 9 =
  5. 5.8 × 9 =
  6. 6.727 × 999 =
  7. 7.837 × 999 =
  8. 8.38 × 9 =
  9. 9.118 × 9 =
  10. 10.151 × 9 =
  11. 11.84 × 999 =
  12. 12.3 × 9 =
  13. 13.26279 × 999 =
  14. 14.2006 × 99 =
  15. 15.3 × 9 =
  16. 16.7 × 9 =
  17. 17.798 × 999 =
  18. 18.63 × 99 =
  19. 19.32 × 99 =
  20. 20.4 × 9 =
  21. 21.5 × 99 =
  22. 22.26842 × 999 =
  23. 23.8984 × 999 =
  24. 24.89 × 99 =
  25. 25.235 × 9 =
  26. 26.29 × 99 =
  27. 27.3 × 9 =
  28. 28.35 × 99 =
  29. 29.1572 × 99 =
  30. 30.56 × 99 =
  31. 31.14 × 99 =
  32. 32.576 × 99 =
  33. 33.57 × 99 =
  34. 34.31 × 99 =
  35. 35.2693 × 99 =
  36. 36.872 × 999 =
  37. 37.4 × 9 =
  38. 38.232 × 999 =
  39. 39.194 × 999 =
  40. 40.97 × 99 =

Answer key

  1. 45
  2. 904095
  3. 9405
  4. 1692
  5. 72
  6. 726273
  7. 836163
  8. 342
  9. 1062
  10. 1359
  11. 83916
  12. 27
  13. 26252721
  14. 198594
  15. 27
  16. 63
  17. 797202
  18. 6237
  19. 3168
  20. 36
  21. 495
  22. 26815158
  23. 8975016
  24. 8811
  25. 2115
  26. 2871
  27. 27
  28. 3465
  29. 155628
  30. 5544
  31. 1386
  32. 57024
  33. 5643
  34. 3069
  35. 266607
  36. 871128
  37. 36
  38. 231768
  39. 193806
  40. 9603

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