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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 665 · 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. 1.965 × 999 =
  2. 2.68 × 99 =
  3. 3.422 × 99 =
  4. 4.799 × 999 =
  5. 5.7646 × 999 =
  6. 6.2 × 9 =
  7. 7.5 × 9 =
  8. 8.3 × 9 =
  9. 9.2784 × 99 =
  10. 10.348 × 999 =
  11. 11.37 × 99 =
  12. 12.2 × 9 =
  13. 13.872 × 999 =
  14. 14.4 × 9 =
  15. 15.4671 × 999 =
  16. 16.21 × 99 =
  17. 17.8 × 9 =
  18. 18.64 × 99 =
  19. 19.372 × 999 =
  20. 20.5 × 9 =
  21. 21.3 × 9 =
  22. 22.2 × 9 =
  23. 23.32 × 99 =
  24. 24.6 × 9 =
  25. 25.76 × 99 =
  26. 26.9 × 99 =
  27. 27.8 × 9 =
  28. 28.26 × 999 =
  29. 29.77 × 99 =
  30. 30.437 × 999 =
  31. 31.4 × 9 =
  32. 32.56 × 99 =
  33. 33.54 × 99 =
  34. 34.58 × 999 =
  35. 35.45 × 99 =
  36. 36.8 × 9 =
  37. 37.27 × 99 =
  38. 38.12644 × 999 =
  39. 39.6 × 9 =
  40. 40.66 × 99 =

Answer key

  1. 964035
  2. 6732
  3. 41778
  4. 798201
  5. 7638354
  6. 18
  7. 45
  8. 27
  9. 275616
  10. 347652
  11. 3663
  12. 18
  13. 871128
  14. 36
  15. 4666329
  16. 2079
  17. 72
  18. 6336
  19. 371628
  20. 45
  21. 27
  22. 18
  23. 3168
  24. 54
  25. 7524
  26. 891
  27. 72
  28. 25974
  29. 7623
  30. 436563
  31. 36
  32. 5544
  33. 5346
  34. 57942
  35. 4455
  36. 72
  37. 2673
  38. 12631356
  39. 54
  40. 6534

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