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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 703 · 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. 1.8 × 9 =
  2. 2.782 × 999 =
  3. 3.7 × 9 =
  4. 4.6 × 9 =
  5. 5.16948 × 999 =
  6. 6.2 × 9 =
  7. 7.53 × 99 =
  8. 8.4 × 9 =
  9. 9.67 × 99 =
  10. 10.3 × 99 =
  11. 11.209 × 999 =
  12. 12.20583 × 999 =
  13. 13.313 × 999 =
  14. 14.461 × 999 =
  15. 15.2 × 9 =
  16. 16.1675 × 99 =
  17. 17.46 × 99 =
  18. 18.8 × 9 =
  19. 19.85 × 99 =
  20. 20.34 × 99 =
  21. 21.419 × 999 =
  22. 22.21644 × 999 =
  23. 23.671 × 999 =
  24. 24.221 × 9 =
  25. 25.6 × 9 =
  26. 26.48 × 99 =
  27. 27.8 × 9 =
  28. 28.58 × 99 =
  29. 29.201 × 999 =
  30. 30.6 × 9 =
  31. 31.20883 × 999 =
  32. 32.2 × 9 =
  33. 33.676 × 999 =
  34. 34.5 × 9 =
  35. 35.8 × 9 =
  36. 36.3 × 9 =
  37. 37.27747 × 999 =
  38. 38.2 × 9 =
  39. 39.5806 × 999 =
  40. 40.2794 × 99 =

Answer key

  1. 72
  2. 781218
  3. 63
  4. 54
  5. 16931052
  6. 18
  7. 5247
  8. 36
  9. 6633
  10. 297
  11. 208791
  12. 20562417
  13. 312687
  14. 460539
  15. 18
  16. 165825
  17. 4554
  18. 72
  19. 8415
  20. 3366
  21. 418581
  22. 21622356
  23. 670329
  24. 1989
  25. 54
  26. 4752
  27. 72
  28. 5742
  29. 200799
  30. 54
  31. 20862117
  32. 18
  33. 675324
  34. 45
  35. 72
  36. 27
  37. 27719253
  38. 18
  39. 5800194
  40. 276606

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