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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 856 · 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. 1.942 × 999 =
  2. 2.76 × 99 =
  3. 3.3 × 9 =
  4. 4.5 × 9 =
  5. 5.74 × 9 =
  6. 6.23 × 99 =
  7. 7.75 × 99 =
  8. 8.93 × 99 =
  9. 9.5 × 9 =
  10. 10.46 × 99 =
  11. 11.2 × 9 =
  12. 12.61 × 99 =
  13. 13.5127 × 999 =
  14. 14.2111 × 99 =
  15. 15.2 × 9 =
  16. 16.77 × 99 =
  17. 17.15 × 99 =
  18. 18.7 × 9 =
  19. 19.64 × 99 =
  20. 20.359 × 999 =
  21. 21.5 × 9 =
  22. 22.173 × 999 =
  23. 23.79 × 9 =
  24. 24.7 × 9 =
  25. 25.16968 × 999 =
  26. 26.222 × 9 =
  27. 27.39 × 99 =
  28. 28.918 × 999 =
  29. 29.3 × 9 =
  30. 30.56 × 99 =
  31. 31.2 × 9 =
  32. 32.6 × 9 =
  33. 33.1242 × 99 =
  34. 34.44 × 99 =
  35. 35.2 × 9 =
  36. 36.8 × 9 =
  37. 37.96 × 99 =
  38. 38.36 × 99 =
  39. 39.25 × 99 =
  40. 40.65 × 99 =

Answer key

  1. 941058
  2. 7524
  3. 27
  4. 45
  5. 666
  6. 2277
  7. 7425
  8. 9207
  9. 45
  10. 4554
  11. 18
  12. 6039
  13. 5121873
  14. 208989
  15. 18
  16. 7623
  17. 1485
  18. 63
  19. 6336
  20. 358641
  21. 45
  22. 172827
  23. 711
  24. 63
  25. 16951032
  26. 1998
  27. 3861
  28. 917082
  29. 27
  30. 5544
  31. 18
  32. 54
  33. 122958
  34. 4356
  35. 18
  36. 72
  37. 9504
  38. 3564
  39. 2475
  40. 6435

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