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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 336 · 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. 1.141 × 999 =
  2. 2.6371 × 999 =
  3. 3.51 × 99 =
  4. 4.17706 × 999 =
  5. 5.43 × 99 =
  6. 6.29 × 99 =
  7. 7.248 × 999 =
  8. 8.29141 × 999 =
  9. 9.135 × 9 =
  10. 10.66 × 9 =
  11. 11.65 × 99 =
  12. 12.38 × 99 =
  13. 13.18077 × 999 =
  14. 14.73 × 999 =
  15. 15.8 × 9 =
  16. 16.5 × 9 =
  17. 17.3 × 99 =
  18. 18.259 × 999 =
  19. 19.2 × 9 =
  20. 20.89 × 9 =
  21. 21.4 × 9 =
  22. 22.22939 × 999 =
  23. 23.188 × 9 =
  24. 24.8 × 9 =
  25. 25.7 × 9 =
  26. 26.561 × 999 =
  27. 27.6 × 9 =
  28. 28.4 × 99 =
  29. 29.158 × 9 =
  30. 30.41 × 99 =
  31. 31.5 × 9 =
  32. 32.91 × 99 =
  33. 33.8 × 9 =
  34. 34.4 × 9 =
  35. 35.1488 × 99 =
  36. 36.35 × 99 =
  37. 37.14746 × 999 =
  38. 38.89 × 9 =
  39. 39.22843 × 999 =
  40. 40.3 × 9 =

Answer key

  1. 140859
  2. 6364629
  3. 5049
  4. 17688294
  5. 4257
  6. 2871
  7. 247752
  8. 29111859
  9. 1215
  10. 594
  11. 6435
  12. 3762
  13. 18058923
  14. 72927
  15. 72
  16. 45
  17. 297
  18. 258741
  19. 18
  20. 801
  21. 36
  22. 22916061
  23. 1692
  24. 72
  25. 63
  26. 560439
  27. 54
  28. 396
  29. 1422
  30. 4059
  31. 45
  32. 9009
  33. 72
  34. 36
  35. 147312
  36. 3465
  37. 14731254
  38. 801
  39. 22820157
  40. 27

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