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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 124 · 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. 1.5364 × 999 =
  2. 2.54 × 99 =
  3. 3.67 × 99 =
  4. 4.9213 × 999 =
  5. 5.3 × 9 =
  6. 6.7 × 9 =
  7. 7.5 × 9 =
  8. 8.3 × 9 =
  9. 9.163 × 9 =
  10. 10.7 × 9 =
  11. 11.6 × 9 =
  12. 12.4 × 9 =
  13. 13.7347 × 999 =
  14. 14.6 × 9 =
  15. 15.8 × 9 =
  16. 16.4 × 9 =
  17. 17.6 × 9 =
  18. 18.11 × 999 =
  19. 19.1464 × 99 =
  20. 20.7 × 9 =
  21. 21.2135 × 99 =
  22. 22.8 × 99 =
  23. 23.654 × 99 =
  24. 24.794 × 999 =
  25. 25.69 × 9 =
  26. 26.675 × 999 =
  27. 27.6 × 9 =
  28. 28.5 × 9 =
  29. 29.74 × 9 =
  30. 30.4 × 9 =
  31. 31.142 × 9 =
  32. 32.866 × 999 =
  33. 33.3 × 9 =
  34. 34.6 × 9 =
  35. 35.301 × 999 =
  36. 36.27297 × 999 =
  37. 37.191 × 9 =
  38. 38.26936 × 999 =
  39. 39.421 × 999 =
  40. 40.73 × 99 =

Answer key

  1. 5358636
  2. 5346
  3. 6633
  4. 9203787
  5. 27
  6. 63
  7. 45
  8. 27
  9. 1467
  10. 63
  11. 54
  12. 36
  13. 7339653
  14. 54
  15. 72
  16. 36
  17. 54
  18. 10989
  19. 144936
  20. 63
  21. 211365
  22. 792
  23. 64746
  24. 793206
  25. 621
  26. 674325
  27. 54
  28. 45
  29. 666
  30. 36
  31. 1278
  32. 865134
  33. 27
  34. 54
  35. 300699
  36. 27269703
  37. 1719
  38. 26909064
  39. 420579
  40. 7227

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