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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 397 · 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. 1.954 × 999 =
  2. 2.98 × 99 =
  3. 3.138 × 9 =
  4. 4.21436 × 999 =
  5. 5.32 × 99 =
  6. 6.63 × 99 =
  7. 7.461 × 999 =
  8. 8.6 × 99 =
  9. 9.29 × 99 =
  10. 10.71 × 99 =
  11. 11.181 × 999 =
  12. 12.79 × 9 =
  13. 13.13 × 99 =
  14. 14.2238 × 99 =
  15. 15.102 × 9 =
  16. 16.4 × 9 =
  17. 17.82 × 99 =
  18. 18.25786 × 999 =
  19. 19.3 × 999 =
  20. 20.96 × 99 =
  21. 21.2 × 99 =
  22. 22.4 × 9 =
  23. 23.12892 × 999 =
  24. 24.69 × 99 =
  25. 25.5 × 99 =
  26. 26.23 × 99 =
  27. 27.1781 × 99 =
  28. 28.48 × 99 =
  29. 29.238 × 9 =
  30. 30.803 × 999 =
  31. 31.11 × 99 =
  32. 32.782 × 999 =
  33. 33.154 × 9 =
  34. 34.633 × 999 =
  35. 35.4 × 9 =
  36. 36.3 × 9 =
  37. 37.538 × 999 =
  38. 38.5 × 9 =
  39. 39.51 × 99 =
  40. 40.69 × 9 =

Answer key

  1. 953046
  2. 9702
  3. 1242
  4. 21414564
  5. 3168
  6. 6237
  7. 460539
  8. 594
  9. 2871
  10. 7029
  11. 180819
  12. 711
  13. 1287
  14. 221562
  15. 918
  16. 36
  17. 8118
  18. 25760214
  19. 2997
  20. 9504
  21. 198
  22. 36
  23. 12879108
  24. 6831
  25. 495
  26. 2277
  27. 176319
  28. 4752
  29. 2142
  30. 802197
  31. 1089
  32. 781218
  33. 1386
  34. 632367
  35. 36
  36. 27
  37. 537462
  38. 45
  39. 5049
  40. 621

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