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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 652 · 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 × 99 =
  2. 2.7 × 9 =
  3. 3.76 × 99 =
  4. 4.38 × 99 =
  5. 5.265 × 9 =
  6. 6.53 × 99 =
  7. 7.4 × 9 =
  8. 8.23 × 99 =
  9. 9.8 × 9 =
  10. 10.14251 × 999 =
  11. 11.339 × 999 =
  12. 12.6 × 99 =
  13. 13.3 × 9 =
  14. 14.2 × 9 =
  15. 15.723 × 999 =
  16. 16.189 × 9 =
  17. 17.8 × 9 =
  18. 18.8 × 9 =
  19. 19.648 × 999 =
  20. 20.62 × 99 =
  21. 21.8 × 9 =
  22. 22.9532 × 999 =
  23. 23.6 × 9 =
  24. 24.615 × 999 =
  25. 25.9 × 999 =
  26. 26.67 × 99 =
  27. 27.1307 × 99 =
  28. 28.3 × 9 =
  29. 29.6 × 9 =
  30. 30.5 × 9 =
  31. 31.53 × 99 =
  32. 32.331 × 99 =
  33. 33.29029 × 999 =
  34. 34.7 × 9 =
  35. 35.963 × 999 =
  36. 36.28555 × 999 =
  37. 37.1461 × 99 =
  38. 38.72 × 99 =
  39. 39.3 × 9 =
  40. 40.3 × 9 =

Answer key

  1. 594
  2. 63
  3. 7524
  4. 3762
  5. 2385
  6. 5247
  7. 36
  8. 2277
  9. 72
  10. 14236749
  11. 338661
  12. 594
  13. 27
  14. 18
  15. 722277
  16. 1701
  17. 72
  18. 72
  19. 647352
  20. 6138
  21. 72
  22. 9522468
  23. 54
  24. 614385
  25. 8991
  26. 6633
  27. 129393
  28. 27
  29. 54
  30. 45
  31. 5247
  32. 32769
  33. 28999971
  34. 63
  35. 962037
  36. 28526445
  37. 144639
  38. 7128
  39. 27
  40. 27

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