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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 403 · 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. 1.3 × 9 =
  2. 2.239 × 999 =
  3. 3.253 × 9 =
  4. 4.92 × 99 =
  5. 5.1386 × 99 =
  6. 6.139 × 9 =
  7. 7.113 × 999 =
  8. 8.251 × 9 =
  9. 9.6 × 9 =
  10. 10.81 × 9 =
  11. 11.21 × 99 =
  12. 12.3 × 9 =
  13. 13.6 × 9 =
  14. 14.4762 × 999 =
  15. 15.7 × 9 =
  16. 16.5 × 9 =
  17. 17.136 × 999 =
  18. 18.1422 × 99 =
  19. 19.5 × 9 =
  20. 20.791 × 999 =
  21. 21.451 × 999 =
  22. 22.5 × 9 =
  23. 23.6 × 9 =
  24. 24.61 × 99 =
  25. 25.439 × 999 =
  26. 26.4 × 9 =
  27. 27.49 × 99 =
  28. 28.37 × 9 =
  29. 29.8 × 9 =
  30. 30.446 × 999 =
  31. 31.437 × 99 =
  32. 32.719 × 999 =
  33. 33.542 × 999 =
  34. 34.5 × 9 =
  35. 35.82 × 9 =
  36. 36.13595 × 999 =
  37. 37.248 × 999 =
  38. 38.48 × 9 =
  39. 39.112 × 999 =
  40. 40.3 × 9 =

Answer key

  1. 27
  2. 238761
  3. 2277
  4. 9108
  5. 137214
  6. 1251
  7. 112887
  8. 2259
  9. 54
  10. 729
  11. 2079
  12. 27
  13. 54
  14. 4757238
  15. 63
  16. 45
  17. 135864
  18. 140778
  19. 45
  20. 790209
  21. 450549
  22. 45
  23. 54
  24. 6039
  25. 438561
  26. 36
  27. 4851
  28. 333
  29. 72
  30. 445554
  31. 43263
  32. 718281
  33. 541458
  34. 45
  35. 738
  36. 13581405
  37. 247752
  38. 432
  39. 111888
  40. 27

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