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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 601 · 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. 1.8 × 9 =
  2. 2.3 × 9 =
  3. 3.921 × 99 =
  4. 4.6 × 9 =
  5. 5.57 × 99 =
  6. 6.7 × 9 =
  7. 7.2107 × 99 =
  8. 8.579 × 999 =
  9. 9.131 × 999 =
  10. 10.927 × 999 =
  11. 11.831 × 99 =
  12. 12.2 × 999 =
  13. 13.12 × 99 =
  14. 14.7 × 9 =
  15. 15.716 × 999 =
  16. 16.7 × 9 =
  17. 17.5 × 9 =
  18. 18.96 × 99 =
  19. 19.35 × 99 =
  20. 20.21 × 99 =
  21. 21.8 × 9 =
  22. 22.5 × 9 =
  23. 23.27 × 99 =
  24. 24.6 × 9 =
  25. 25.97 × 99 =
  26. 26.697 × 999 =
  27. 27.31 × 99 =
  28. 28.77 × 99 =
  29. 29.233 × 999 =
  30. 30.6 × 9 =
  31. 31.24667 × 999 =
  32. 32.3 × 9 =
  33. 33.8792 × 999 =
  34. 34.4 × 9 =
  35. 35.4 × 9 =
  36. 36.779 × 999 =
  37. 37.64 × 99 =
  38. 38.743 × 999 =
  39. 39.5 × 9 =
  40. 40.3 × 9 =

Answer key

  1. 72
  2. 27
  3. 91179
  4. 54
  5. 5643
  6. 63
  7. 208593
  8. 578421
  9. 130869
  10. 926073
  11. 82269
  12. 1998
  13. 1188
  14. 63
  15. 715284
  16. 63
  17. 45
  18. 9504
  19. 3465
  20. 2079
  21. 72
  22. 45
  23. 2673
  24. 54
  25. 9603
  26. 696303
  27. 3069
  28. 7623
  29. 232767
  30. 54
  31. 24642333
  32. 27
  33. 8783208
  34. 36
  35. 36
  36. 778221
  37. 6336
  38. 742257
  39. 45
  40. 27

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