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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 816 · 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. 1.11 × 9 =
  2. 2.65 × 99 =
  3. 3.2 × 9 =
  4. 4.16 × 99 =
  5. 5.81 × 9 =
  6. 6.264 × 9 =
  7. 7.4 × 9 =
  8. 8.36 × 99 =
  9. 9.7 × 9 =
  10. 10.3418 × 999 =
  11. 11.31 × 99 =
  12. 12.328 × 999 =
  13. 13.6 × 9 =
  14. 14.55 × 99 =
  15. 15.259 × 9 =
  16. 16.305 × 999 =
  17. 17.326 × 999 =
  18. 18.142 × 9 =
  19. 19.111 × 999 =
  20. 20.61 × 99 =
  21. 21.5 × 9 =
  22. 22.3 × 9 =
  23. 23.92 × 99 =
  24. 24.3 × 9 =
  25. 25.8 × 9 =
  26. 26.8 × 9 =
  27. 27.957 × 999 =
  28. 28.2 × 9 =
  29. 29.521 × 999 =
  30. 30.255 × 9 =
  31. 31.4 × 9 =
  32. 32.81 × 99 =
  33. 33.6 × 9 =
  34. 34.95 × 99 =
  35. 35.92 × 99 =
  36. 36.394 × 999 =
  37. 37.6 × 9 =
  38. 38.8447 × 999 =
  39. 39.1225 × 99 =
  40. 40.67 × 99 =

Answer key

  1. 99
  2. 6435
  3. 18
  4. 1584
  5. 729
  6. 2376
  7. 36
  8. 3564
  9. 63
  10. 3414582
  11. 3069
  12. 327672
  13. 54
  14. 5445
  15. 2331
  16. 304695
  17. 325674
  18. 1278
  19. 110889
  20. 6039
  21. 45
  22. 27
  23. 9108
  24. 27
  25. 72
  26. 72
  27. 956043
  28. 18
  29. 520479
  30. 2295
  31. 36
  32. 8019
  33. 54
  34. 9405
  35. 9108
  36. 393606
  37. 54
  38. 8438553
  39. 121275
  40. 6633

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