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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 513 · 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. 1.7 × 9 =
  2. 2.48 × 9 =
  3. 3.371 × 999 =
  4. 4.271 × 9 =
  5. 5.3 × 9 =
  6. 6.6 × 9 =
  7. 7.9011 × 999 =
  8. 8.3 × 9 =
  9. 9.2099 × 99 =
  10. 10.81 × 99 =
  11. 11.7 × 9 =
  12. 12.478 × 999 =
  13. 13.2089 × 99 =
  14. 14.69 × 99 =
  15. 15.2072 × 99 =
  16. 16.19 × 99 =
  17. 17.431 × 999 =
  18. 18.679 × 99 =
  19. 19.3 × 9 =
  20. 20.5822 × 999 =
  21. 21.93 × 99 =
  22. 22.8 × 9 =
  23. 23.117 × 9 =
  24. 24.18 × 99 =
  25. 25.2445 × 99 =
  26. 26.488 × 999 =
  27. 27.19906 × 999 =
  28. 28.6 × 9 =
  29. 29.349 × 999 =
  30. 30.51 × 99 =
  31. 31.7939 × 999 =
  32. 32.31 × 999 =
  33. 33.191 × 999 =
  34. 34.8 × 9 =
  35. 35.2851 × 999 =
  36. 36.598 × 999 =
  37. 37.6 × 9 =
  38. 38.178 × 9 =
  39. 39.8 × 9 =
  40. 40.8 × 9 =

Answer key

  1. 63
  2. 432
  3. 370629
  4. 2439
  5. 27
  6. 54
  7. 9001989
  8. 27
  9. 207801
  10. 8019
  11. 63
  12. 477522
  13. 206811
  14. 6831
  15. 205128
  16. 1881
  17. 430569
  18. 67221
  19. 27
  20. 5816178
  21. 9207
  22. 72
  23. 1053
  24. 1782
  25. 242055
  26. 487512
  27. 19886094
  28. 54
  29. 348651
  30. 5049
  31. 7931061
  32. 30969
  33. 190809
  34. 72
  35. 2848149
  36. 597402
  37. 54
  38. 1602
  39. 72
  40. 72

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