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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 705 · 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. 1.416 × 999 =
  2. 2.4 × 9 =
  3. 3.2 × 9 =
  4. 4.673 × 999 =
  5. 5.752 × 999 =
  6. 6.5 × 9 =
  7. 7.27 × 99 =
  8. 8.4 × 9 =
  9. 9.8 × 9 =
  10. 10.68 × 99 =
  11. 11.6 × 9 =
  12. 12.504 × 999 =
  13. 13.91 × 9 =
  14. 14.5 × 9 =
  15. 15.7 × 9 =
  16. 16.867 × 999 =
  17. 17.14 × 999 =
  18. 18.1349 × 99 =
  19. 19.2 × 9 =
  20. 20.8 × 9 =
  21. 21.166 × 9 =
  22. 22.21 × 99 =
  23. 23.7 × 9 =
  24. 24.35 × 9 =
  25. 25.2706 × 99 =
  26. 26.395 × 999 =
  27. 27.72 × 99 =
  28. 28.98 × 9 =
  29. 29.5 × 9 =
  30. 30.4 × 9 =
  31. 31.192 × 9 =
  32. 32.2488 × 99 =
  33. 33.2251 × 99 =
  34. 34.474 × 99 =
  35. 35.29 × 99 =
  36. 36.6 × 9 =
  37. 37.25 × 99 =
  38. 38.564 × 999 =
  39. 39.3 × 9 =
  40. 40.231 × 9 =

Answer key

  1. 415584
  2. 36
  3. 18
  4. 672327
  5. 751248
  6. 45
  7. 2673
  8. 36
  9. 72
  10. 6732
  11. 54
  12. 503496
  13. 819
  14. 45
  15. 63
  16. 866133
  17. 13986
  18. 133551
  19. 18
  20. 72
  21. 1494
  22. 2079
  23. 63
  24. 315
  25. 267894
  26. 394605
  27. 7128
  28. 882
  29. 45
  30. 36
  31. 1728
  32. 246312
  33. 222849
  34. 46926
  35. 2871
  36. 54
  37. 2475
  38. 563436
  39. 27
  40. 2079

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