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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 667 · 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. 1.771 × 999 =
  2. 2.36 × 99 =
  3. 3.16056 × 999 =
  4. 4.5 × 9 =
  5. 5.11 × 99 =
  6. 6.2 × 9 =
  7. 7.227 × 99 =
  8. 8.7 × 9 =
  9. 9.5 × 9 =
  10. 10.1399 × 99 =
  11. 11.3 × 9 =
  12. 12.8 × 9 =
  13. 13.63 × 999 =
  14. 14.249 × 9 =
  15. 15.2534 × 99 =
  16. 16.56 × 9 =
  17. 17.257 × 999 =
  18. 18.6 × 9 =
  19. 19.42 × 99 =
  20. 20.39 × 99 =
  21. 21.4 × 9 =
  22. 22.4 × 9 =
  23. 23.21 × 99 =
  24. 24.6 × 9 =
  25. 25.694 × 999 =
  26. 26.39 × 999 =
  27. 27.191 × 9 =
  28. 28.74 × 99 =
  29. 29.2007 × 99 =
  30. 30.691 × 999 =
  31. 31.74 × 9 =
  32. 32.208 × 999 =
  33. 33.6 × 9 =
  34. 34.29 × 99 =
  35. 35.3 × 9 =
  36. 36.47 × 99 =
  37. 37.81 × 99 =
  38. 38.342 × 99 =
  39. 39.5 × 9 =
  40. 40.159 × 9 =

Answer key

  1. 770229
  2. 3564
  3. 16039944
  4. 45
  5. 1089
  6. 18
  7. 22473
  8. 63
  9. 45
  10. 138501
  11. 27
  12. 72
  13. 62937
  14. 2241
  15. 250866
  16. 504
  17. 256743
  18. 54
  19. 4158
  20. 3861
  21. 36
  22. 36
  23. 2079
  24. 54
  25. 693306
  26. 38961
  27. 1719
  28. 7326
  29. 198693
  30. 690309
  31. 666
  32. 207792
  33. 54
  34. 2871
  35. 27
  36. 4653
  37. 8019
  38. 33858
  39. 45
  40. 1431

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