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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 293 · 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. 1.2 × 9 =
  2. 2.475 × 999 =
  3. 3.503 × 999 =
  4. 4.106 × 9 =
  5. 5.493 × 999 =
  6. 6.5 × 9 =
  7. 7.306 × 999 =
  8. 8.61 × 99 =
  9. 9.51 × 99 =
  10. 10.531 × 999 =
  11. 11.5 × 9 =
  12. 12.7 × 9 =
  13. 13.76 × 99 =
  14. 14.3 × 9 =
  15. 15.2875 × 99 =
  16. 16.74 × 99 =
  17. 17.18647 × 999 =
  18. 18.271 × 999 =
  19. 19.623 × 999 =
  20. 20.207 × 999 =
  21. 21.105 × 999 =
  22. 22.4 × 9 =
  23. 23.618 × 999 =
  24. 24.38 × 99 =
  25. 25.6 × 99 =
  26. 26.8785 × 999 =
  27. 27.1399 × 99 =
  28. 28.385 × 999 =
  29. 29.64 × 9 =
  30. 30.6 × 9 =
  31. 31.179 × 9 =
  32. 32.63 × 9 =
  33. 33.217 × 9 =
  34. 34.3 × 9 =
  35. 35.88 × 9 =
  36. 36.14736 × 999 =
  37. 37.44 × 99 =
  38. 38.44 × 999 =
  39. 39.5 × 9 =
  40. 40.117 × 9 =

Answer key

  1. 18
  2. 474525
  3. 502497
  4. 954
  5. 492507
  6. 45
  7. 305694
  8. 6039
  9. 5049
  10. 530469
  11. 45
  12. 63
  13. 7524
  14. 27
  15. 284625
  16. 7326
  17. 18628353
  18. 270729
  19. 622377
  20. 206793
  21. 104895
  22. 36
  23. 617382
  24. 3762
  25. 594
  26. 8776215
  27. 138501
  28. 384615
  29. 576
  30. 54
  31. 1611
  32. 567
  33. 1953
  34. 27
  35. 792
  36. 14721264
  37. 4356
  38. 43956
  39. 45
  40. 1053

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