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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 547 · 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. 1.6 × 9 =
  2. 2.236 × 999 =
  3. 3.37 × 99 =
  4. 4.29147 × 999 =
  5. 5.7 × 9 =
  6. 6.3 × 9 =
  7. 7.72 × 99 =
  8. 8.76 × 99 =
  9. 9.21296 × 999 =
  10. 10.234 × 999 =
  11. 11.6 × 9 =
  12. 12.1228 × 99 =
  13. 13.742 × 999 =
  14. 14.3 × 9 =
  15. 15.46 × 99 =
  16. 16.249 × 999 =
  17. 17.826 × 99 =
  18. 18.137 × 9 =
  19. 19.52 × 99 =
  20. 20.237 × 9 =
  21. 21.972 × 999 =
  22. 22.203 × 9 =
  23. 23.271 × 999 =
  24. 24.45 × 99 =
  25. 25.764 × 999 =
  26. 26.571 × 999 =
  27. 27.87 × 99 =
  28. 28.18707 × 999 =
  29. 29.14 × 99 =
  30. 30.17 × 99 =
  31. 31.7501 × 999 =
  32. 32.246 × 9 =
  33. 33.7 × 9 =
  34. 34.3433 × 999 =
  35. 35.222 × 9 =
  36. 36.91 × 99 =
  37. 37.10649 × 999 =
  38. 38.65 × 999 =
  39. 39.5 × 9 =
  40. 40.696 × 999 =

Answer key

  1. 54
  2. 235764
  3. 3663
  4. 29117853
  5. 63
  6. 27
  7. 7128
  8. 7524
  9. 21274704
  10. 233766
  11. 54
  12. 121572
  13. 741258
  14. 27
  15. 4554
  16. 248751
  17. 81774
  18. 1233
  19. 5148
  20. 2133
  21. 971028
  22. 1827
  23. 270729
  24. 4455
  25. 763236
  26. 570429
  27. 8613
  28. 18688293
  29. 1386
  30. 1683
  31. 7493499
  32. 2214
  33. 63
  34. 3429567
  35. 1998
  36. 9009
  37. 10638351
  38. 64935
  39. 45
  40. 695304

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