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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 407 · 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. 1.10016 × 999 =
  2. 2.75 × 999 =
  3. 3.3 × 9 =
  4. 4.285 × 999 =
  5. 5.294 × 999 =
  6. 6.7 × 9 =
  7. 7.47 × 99 =
  8. 8.416 × 999 =
  9. 9.28817 × 999 =
  10. 10.6 × 9 =
  11. 11.8 × 9 =
  12. 12.5 × 9 =
  13. 13.834 × 999 =
  14. 14.37 × 99 =
  15. 15.6 × 9 =
  16. 16.53 × 9 =
  17. 17.5 × 9 =
  18. 18.16971 × 999 =
  19. 19.2635 × 99 =
  20. 20.432 × 999 =
  21. 21.24916 × 999 =
  22. 22.5 × 9 =
  23. 23.49 × 99 =
  24. 24.91 × 99 =
  25. 25.1796 × 99 =
  26. 26.7 × 99 =
  27. 27.8 × 9 =
  28. 28.54 × 99 =
  29. 29.7 × 9 =
  30. 30.4 × 9 =
  31. 31.5 × 9 =
  32. 32.103 × 999 =
  33. 33.24445 × 999 =
  34. 34.29169 × 999 =
  35. 35.3 × 9 =
  36. 36.6 × 9 =
  37. 37.11566 × 999 =
  38. 38.341 × 999 =
  39. 39.11 × 99 =
  40. 40.251 × 999 =

Answer key

  1. 10005984
  2. 74925
  3. 27
  4. 284715
  5. 293706
  6. 63
  7. 4653
  8. 415584
  9. 28788183
  10. 54
  11. 72
  12. 45
  13. 833166
  14. 3663
  15. 54
  16. 477
  17. 45
  18. 16954029
  19. 260865
  20. 431568
  21. 24891084
  22. 45
  23. 4851
  24. 9009
  25. 177804
  26. 693
  27. 72
  28. 5346
  29. 63
  30. 36
  31. 45
  32. 102897
  33. 24420555
  34. 29139831
  35. 27
  36. 54
  37. 11554434
  38. 340659
  39. 1089
  40. 250749

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