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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 214 · 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. 2.81 × 99 =
  3. 3.902 × 999 =
  4. 4.5 × 99 =
  5. 5.6 × 9 =
  6. 6.58 × 99 =
  7. 7.43 × 999 =
  8. 8.12 × 99 =
  9. 9.3 × 9 =
  10. 10.96 × 99 =
  11. 11.84 × 999 =
  12. 12.73 × 99 =
  13. 13.462 × 999 =
  14. 14.21718 × 999 =
  15. 15.12597 × 999 =
  16. 16.73 × 99 =
  17. 17.2659 × 99 =
  18. 18.55 × 99 =
  19. 19.6 × 9 =
  20. 20.74 × 99 =
  21. 21.3 × 9 =
  22. 22.1164 × 99 =
  23. 23.211 × 99 =
  24. 24.4 × 9 =
  25. 25.2254 × 99 =
  26. 26.69 × 99 =
  27. 27.339 × 99 =
  28. 28.467 × 999 =
  29. 29.927 × 999 =
  30. 30.26 × 99 =
  31. 31.5 × 99 =
  32. 32.7 × 9 =
  33. 33.106 × 9 =
  34. 34.204 × 999 =
  35. 35.61 × 9 =
  36. 36.2 × 99 =
  37. 37.45 × 999 =
  38. 38.211 × 9 =
  39. 39.572 × 999 =
  40. 40.8 × 9 =

Answer key

  1. 18
  2. 8019
  3. 901098
  4. 495
  5. 54
  6. 5742
  7. 42957
  8. 1188
  9. 27
  10. 9504
  11. 83916
  12. 7227
  13. 461538
  14. 21696282
  15. 12584403
  16. 7227
  17. 263241
  18. 5445
  19. 54
  20. 7326
  21. 27
  22. 115236
  23. 20889
  24. 36
  25. 223146
  26. 6831
  27. 33561
  28. 466533
  29. 926073
  30. 2574
  31. 495
  32. 63
  33. 954
  34. 203796
  35. 549
  36. 198
  37. 44955
  38. 1899
  39. 571428
  40. 72

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