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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 894 · 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. 1.3 × 9 =
  2. 2.24 × 999 =
  3. 3.21 × 99 =
  4. 4.79 × 99 =
  5. 5.11 × 99 =
  6. 6.498 × 999 =
  7. 7.238 × 9 =
  8. 8.3 × 9 =
  9. 9.224 × 999 =
  10. 10.41 × 99 =
  11. 11.286 × 999 =
  12. 12.53 × 9 =
  13. 13.2 × 9 =
  14. 14.7 × 9 =
  15. 15.7 × 9 =
  16. 16.3 × 9 =
  17. 17.47 × 99 =
  18. 18.585 × 999 =
  19. 19.224 × 999 =
  20. 20.434 × 999 =
  21. 21.63 × 99 =
  22. 22.925 × 999 =
  23. 23.972 × 999 =
  24. 24.441 × 999 =
  25. 25.6 × 9 =
  26. 26.4 × 9 =
  27. 27.24682 × 999 =
  28. 28.7 × 9 =
  29. 29.117 × 999 =
  30. 30.47 × 99 =
  31. 31.75 × 99 =
  32. 32.79 × 99 =
  33. 33.29799 × 999 =
  34. 34.15176 × 999 =
  35. 35.456 × 999 =
  36. 36.21 × 99 =
  37. 37.2646 × 99 =
  38. 38.56 × 99 =
  39. 39.20855 × 999 =
  40. 40.6 × 9 =

Answer key

  1. 27
  2. 23976
  3. 2079
  4. 7821
  5. 1089
  6. 497502
  7. 2142
  8. 27
  9. 223776
  10. 4059
  11. 285714
  12. 477
  13. 18
  14. 63
  15. 63
  16. 27
  17. 4653
  18. 584415
  19. 223776
  20. 433566
  21. 6237
  22. 924075
  23. 971028
  24. 440559
  25. 54
  26. 36
  27. 24657318
  28. 63
  29. 116883
  30. 4653
  31. 7425
  32. 7821
  33. 29769201
  34. 15160824
  35. 455544
  36. 2079
  37. 261954
  38. 5544
  39. 20834145
  40. 54

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