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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 676 · 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. 1.81 × 99 =
  2. 2.6 × 9 =
  3. 3.7 × 9 =
  4. 4.6 × 9 =
  5. 5.251 × 9 =
  6. 6.4 × 9 =
  7. 7.5 × 9 =
  8. 8.24085 × 999 =
  9. 9.7 × 9 =
  10. 10.62 × 9 =
  11. 11.83 × 9 =
  12. 12.23869 × 999 =
  13. 13.75 × 99 =
  14. 14.27041 × 999 =
  15. 15.151 × 999 =
  16. 16.21 × 9 =
  17. 17.493 × 999 =
  18. 18.831 × 99 =
  19. 19.3 × 9 =
  20. 20.101 × 9 =
  21. 21.6 × 9 =
  22. 22.987 × 99 =
  23. 23.8 × 9 =
  24. 24.1538 × 99 =
  25. 25.6 × 9 =
  26. 26.226 × 9 =
  27. 27.685 × 999 =
  28. 28.21 × 99 =
  29. 29.1311 × 99 =
  30. 30.7 × 99 =
  31. 31.2534 × 99 =
  32. 32.81 × 99 =
  33. 33.2 × 99 =
  34. 34.81 × 99 =
  35. 35.2158 × 99 =
  36. 36.2034 × 99 =
  37. 37.4 × 9 =
  38. 38.743 × 999 =
  39. 39.548 × 999 =
  40. 40.13 × 9 =

Answer key

  1. 8019
  2. 54
  3. 63
  4. 54
  5. 2259
  6. 36
  7. 45
  8. 24060915
  9. 63
  10. 558
  11. 747
  12. 23845131
  13. 7425
  14. 27013959
  15. 150849
  16. 189
  17. 492507
  18. 82269
  19. 27
  20. 909
  21. 54
  22. 97713
  23. 72
  24. 152262
  25. 54
  26. 2034
  27. 684315
  28. 2079
  29. 129789
  30. 693
  31. 250866
  32. 8019
  33. 198
  34. 8019
  35. 213642
  36. 201366
  37. 36
  38. 742257
  39. 547452
  40. 117

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