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Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 751 · 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. 1.5 × 9 =
  2. 2.7 × 9 =
  3. 3.2938 × 999 =
  4. 4.3 × 9 =
  5. 5.8 × 9 =
  6. 6.52 × 99 =
  7. 7.891 × 999 =
  8. 8.21 × 99 =
  9. 9.445 × 99 =
  10. 10.2 × 9 =
  11. 11.3 × 9 =
  12. 12.939 × 999 =
  13. 13.24697 × 999 =
  14. 14.98 × 9 =
  15. 15.8 × 9 =
  16. 16.531 × 999 =
  17. 17.11677 × 999 =
  18. 18.34 × 9 =
  19. 19.6738 × 999 =
  20. 20.161 × 9 =
  21. 21.324 × 999 =
  22. 22.907 × 999 =
  23. 23.3 × 9 =
  24. 24.2457 × 99 =
  25. 25.8 × 9 =
  26. 26.257 × 999 =
  27. 27.79 × 99 =
  28. 28.8 × 9 =
  29. 29.286 × 999 =
  30. 30.79 × 99 =
  31. 31.23 × 99 =
  32. 32.161 × 999 =
  33. 33.61 × 9 =
  34. 34.29891 × 999 =
  35. 35.138 × 9 =
  36. 36.86 × 99 =
  37. 37.666 × 999 =
  38. 38.127 × 999 =
  39. 39.765 × 999 =
  40. 40.8 × 9 =

Answer key

  1. 45
  2. 63
  3. 2935062
  4. 27
  5. 72
  6. 5148
  7. 890109
  8. 2079
  9. 44055
  10. 18
  11. 27
  12. 938061
  13. 24672303
  14. 882
  15. 72
  16. 530469
  17. 11665323
  18. 306
  19. 6731262
  20. 1449
  21. 323676
  22. 906093
  23. 27
  24. 243243
  25. 72
  26. 256743
  27. 7821
  28. 72
  29. 285714
  30. 7821
  31. 2277
  32. 160839
  33. 549
  34. 29861109
  35. 1242
  36. 8514
  37. 665334
  38. 126873
  39. 764235
  40. 72

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