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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 604 · 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. 1.207 × 99 =
  2. 2.68 × 99 =
  3. 3.88 × 99 =
  4. 4.87 × 9 =
  5. 5.5 × 9 =
  6. 6.91 × 999 =
  7. 7.8 × 9 =
  8. 8.8 × 9 =
  9. 9.148 × 999 =
  10. 10.18923 × 999 =
  11. 11.41 × 99 =
  12. 12.176 × 999 =
  13. 13.7 × 9 =
  14. 14.185 × 9 =
  15. 15.2424 × 99 =
  16. 16.4 × 9 =
  17. 17.81 × 99 =
  18. 18.8 × 9 =
  19. 19.8 × 9 =
  20. 20.3328 × 999 =
  21. 21.63 × 9 =
  22. 22.82 × 99 =
  23. 23.5 × 9 =
  24. 24.5 × 9 =
  25. 25.2 × 9 =
  26. 26.6 × 9 =
  27. 27.4 × 99 =
  28. 28.96 × 99 =
  29. 29.55 × 99 =
  30. 30.6 × 9 =
  31. 31.15 × 9 =
  32. 32.525 × 999 =
  33. 33.2 × 9 =
  34. 34.367 × 999 =
  35. 35.88 × 99 =
  36. 36.7888 × 999 =
  37. 37.4 × 9 =
  38. 38.1042 × 99 =
  39. 39.74 × 9 =
  40. 40.2395 × 99 =

Answer key

  1. 20493
  2. 6732
  3. 8712
  4. 783
  5. 45
  6. 90909
  7. 72
  8. 72
  9. 147852
  10. 18904077
  11. 4059
  12. 175824
  13. 63
  14. 1665
  15. 239976
  16. 36
  17. 8019
  18. 72
  19. 72
  20. 3324672
  21. 567
  22. 8118
  23. 45
  24. 45
  25. 18
  26. 54
  27. 396
  28. 9504
  29. 5445
  30. 54
  31. 135
  32. 524475
  33. 18
  34. 366633
  35. 8712
  36. 7880112
  37. 36
  38. 103158
  39. 666
  40. 237105

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