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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 327 · 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. 1.3 × 99 =
  2. 2.123 × 9 =
  3. 3.9 × 99 =
  4. 4.43 × 999 =
  5. 5.149 × 999 =
  6. 6.3 × 9 =
  7. 7.332 × 999 =
  8. 8.1052 × 99 =
  9. 9.5 × 9 =
  10. 10.83 × 99 =
  11. 11.2 × 9 =
  12. 12.52 × 99 =
  13. 13.551 × 999 =
  14. 14.27404 × 999 =
  15. 15.72 × 9 =
  16. 16.5 × 9 =
  17. 17.5102 × 999 =
  18. 18.98 × 99 =
  19. 19.7 × 9 =
  20. 20.221 × 999 =
  21. 21.91 × 99 =
  22. 22.214 × 999 =
  23. 23.7 × 9 =
  24. 24.8 × 9 =
  25. 25.537 × 999 =
  26. 26.33 × 99 =
  27. 27.134 × 9 =
  28. 28.4 × 9 =
  29. 29.7 × 9 =
  30. 30.1992 × 99 =
  31. 31.6 × 9 =
  32. 32.61 × 99 =
  33. 33.137 × 999 =
  34. 34.18382 × 999 =
  35. 35.131 × 999 =
  36. 36.438 × 999 =
  37. 37.4 × 9 =
  38. 38.11 × 99 =
  39. 39.82 × 99 =
  40. 40.5118 × 999 =

Answer key

  1. 297
  2. 1107
  3. 891
  4. 42957
  5. 148851
  6. 27
  7. 331668
  8. 104148
  9. 45
  10. 8217
  11. 18
  12. 5148
  13. 550449
  14. 27376596
  15. 648
  16. 45
  17. 5096898
  18. 9702
  19. 63
  20. 220779
  21. 9009
  22. 213786
  23. 63
  24. 72
  25. 536463
  26. 3267
  27. 1206
  28. 36
  29. 63
  30. 197208
  31. 54
  32. 6039
  33. 136863
  34. 18363618
  35. 130869
  36. 437562
  37. 36
  38. 1089
  39. 8118
  40. 5112882

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