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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 577 · 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. 1.6 × 9 =
  2. 2.8 × 9 =
  3. 3.71 × 99 =
  4. 4.5 × 999 =
  5. 5.27 × 999 =
  6. 6.8 × 9 =
  7. 7.564 × 999 =
  8. 8.95 × 99 =
  9. 9.234 × 9 =
  10. 10.1141 × 99 =
  11. 11.29 × 99 =
  12. 12.22 × 99 =
  13. 13.62 × 99 =
  14. 14.54 × 9 =
  15. 15.91 × 9 =
  16. 16.91 × 9 =
  17. 17.339 × 999 =
  18. 18.8 × 9 =
  19. 19.91 × 99 =
  20. 20.95 × 99 =
  21. 21.1005 × 99 =
  22. 22.26 × 99 =
  23. 23.156 × 9 =
  24. 24.21 × 99 =
  25. 25.141 × 999 =
  26. 26.56 × 99 =
  27. 27.71 × 99 =
  28. 28.92 × 99 =
  29. 29.209 × 999 =
  30. 30.65 × 99 =
  31. 31.47 × 99 =
  32. 32.79 × 99 =
  33. 33.62 × 99 =
  34. 34.232 × 999 =
  35. 35.78 × 99 =
  36. 36.3865 × 999 =
  37. 37.95 × 99 =
  38. 38.7 × 9 =
  39. 39.5 × 9 =
  40. 40.258 × 9 =

Answer key

  1. 54
  2. 72
  3. 7029
  4. 4995
  5. 26973
  6. 72
  7. 563436
  8. 9405
  9. 2106
  10. 112959
  11. 2871
  12. 2178
  13. 6138
  14. 486
  15. 819
  16. 819
  17. 338661
  18. 72
  19. 9009
  20. 9405
  21. 99495
  22. 2574
  23. 1404
  24. 2079
  25. 140859
  26. 5544
  27. 7029
  28. 9108
  29. 208791
  30. 6435
  31. 4653
  32. 7821
  33. 6138
  34. 231768
  35. 7722
  36. 3861135
  37. 9405
  38. 63
  39. 45
  40. 2322

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