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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 234 · 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. 1.126 × 999 =
  2. 2.4 × 9 =
  3. 3.31 × 99 =
  4. 4.28 × 99 =
  5. 5.104 × 999 =
  6. 6.566 × 999 =
  7. 7.448 × 999 =
  8. 8.5 × 9 =
  9. 9.2817 × 99 =
  10. 10.3 × 9 =
  11. 11.4 × 9 =
  12. 12.17584 × 999 =
  13. 13.185 × 999 =
  14. 14.14018 × 999 =
  15. 15.5 × 9 =
  16. 16.81 × 9 =
  17. 17.4 × 9 =
  18. 18.8 × 9 =
  19. 19.7 × 9 =
  20. 20.87 × 99 =
  21. 21.11 × 999 =
  22. 22.24488 × 999 =
  23. 23.7 × 9 =
  24. 24.152 × 999 =
  25. 25.493 × 999 =
  26. 26.1383 × 99 =
  27. 27.43 × 99 =
  28. 28.52 × 99 =
  29. 29.401 × 999 =
  30. 30.59 × 9 =
  31. 31.2414 × 99 =
  32. 32.3 × 9 =
  33. 33.4 × 9 =
  34. 34.346 × 999 =
  35. 35.779 × 999 =
  36. 36.22 × 99 =
  37. 37.18437 × 999 =
  38. 38.5 × 9 =
  39. 39.38 × 9 =
  40. 40.5 × 9 =

Answer key

  1. 125874
  2. 36
  3. 3069
  4. 2772
  5. 103896
  6. 565434
  7. 447552
  8. 45
  9. 278883
  10. 27
  11. 36
  12. 17566416
  13. 184815
  14. 14003982
  15. 45
  16. 729
  17. 36
  18. 72
  19. 63
  20. 8613
  21. 10989
  22. 24463512
  23. 63
  24. 151848
  25. 492507
  26. 136917
  27. 4257
  28. 5148
  29. 400599
  30. 531
  31. 238986
  32. 27
  33. 36
  34. 345654
  35. 778221
  36. 2178
  37. 18418563
  38. 45
  39. 342
  40. 45

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