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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 926 · 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. 1.51 × 999 =
  2. 2.4 × 9 =
  3. 3.22 × 99 =
  4. 4.7 × 9 =
  5. 5.4 × 9 =
  6. 6.88 × 99 =
  7. 7.3 × 9 =
  8. 8.511 × 99 =
  9. 9.6 × 9 =
  10. 10.441 × 999 =
  11. 11.2732 × 99 =
  12. 12.141 × 9 =
  13. 13.561 × 999 =
  14. 14.49 × 9 =
  15. 15.904 × 999 =
  16. 16.2 × 9 =
  17. 17.191 × 999 =
  18. 18.449 × 999 =
  19. 19.15 × 99 =
  20. 20.6 × 9 =
  21. 21.56 × 99 =
  22. 22.17 × 99 =
  23. 23.205 × 999 =
  24. 24.54 × 99 =
  25. 25.8 × 9 =
  26. 26.189 × 999 =
  27. 27.6 × 9 =
  28. 28.3 × 9 =
  29. 29.954 × 999 =
  30. 30.7 × 9 =
  31. 31.972 × 999 =
  32. 32.11 × 99 =
  33. 33.268 × 999 =
  34. 34.716 × 99 =
  35. 35.5 × 9 =
  36. 36.23 × 99 =
  37. 37.997 × 999 =
  38. 38.711 × 999 =
  39. 39.58 × 99 =
  40. 40.8 × 9 =

Answer key

  1. 50949
  2. 36
  3. 2178
  4. 63
  5. 36
  6. 8712
  7. 27
  8. 50589
  9. 54
  10. 440559
  11. 270468
  12. 1269
  13. 560439
  14. 441
  15. 903096
  16. 18
  17. 190809
  18. 448551
  19. 1485
  20. 54
  21. 5544
  22. 1683
  23. 204795
  24. 5346
  25. 72
  26. 188811
  27. 54
  28. 27
  29. 953046
  30. 63
  31. 971028
  32. 1089
  33. 267732
  34. 70884
  35. 45
  36. 2277
  37. 996003
  38. 710289
  39. 5742
  40. 72

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