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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 846 · 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. 1.542 × 999 =
  2. 2.8 × 9 =
  3. 3.311 × 999 =
  4. 4.41 × 9 =
  5. 5.111 × 999 =
  6. 6.19 × 99 =
  7. 7.8 × 9 =
  8. 8.1694 × 99 =
  9. 9.54 × 99 =
  10. 10.5 × 9 =
  11. 11.6 × 9 =
  12. 12.51 × 9 =
  13. 13.6 × 9 =
  14. 14.569 × 999 =
  15. 15.26847 × 999 =
  16. 16.3 × 9 =
  17. 17.11 × 99 =
  18. 18.3 × 9 =
  19. 19.5 × 9 =
  20. 20.448 × 999 =
  21. 21.7 × 9 =
  22. 22.57 × 99 =
  23. 23.6 × 9 =
  24. 24.778 × 999 =
  25. 25.86 × 99 =
  26. 26.3 × 9 =
  27. 27.648 × 999 =
  28. 28.13 × 99 =
  29. 29.59 × 99 =
  30. 30.316 × 999 =
  31. 31.148 × 9 =
  32. 32.283 × 999 =
  33. 33.489 × 999 =
  34. 34.363 × 99 =
  35. 35.8 × 9 =
  36. 36.1724 × 99 =
  37. 37.177 × 9 =
  38. 38.53 × 99 =
  39. 39.11458 × 999 =
  40. 40.8 × 9 =

Answer key

  1. 541458
  2. 72
  3. 310689
  4. 369
  5. 110889
  6. 1881
  7. 72
  8. 167706
  9. 5346
  10. 45
  11. 54
  12. 459
  13. 54
  14. 568431
  15. 26820153
  16. 27
  17. 1089
  18. 27
  19. 45
  20. 447552
  21. 63
  22. 5643
  23. 54
  24. 777222
  25. 8514
  26. 27
  27. 647352
  28. 1287
  29. 5841
  30. 315684
  31. 1332
  32. 282717
  33. 488511
  34. 35937
  35. 72
  36. 170676
  37. 1593
  38. 5247
  39. 11446542
  40. 72

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