Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 334 · 40 sums

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.

1. 1.2241 × 99 =
2. 2.311 × 999 =
3. 3.2874 × 99 =
4. 4.409 × 999 =
5. 5.21 × 9 =
6. 6.7 × 9 =
7. 7.7 × 9 =
8. 8.49 × 99 =
9. 9.63 × 999 =
10. 10.3 × 9 =
11. 11.26 × 99 =
12. 12.1479 × 99 =
13. 13.38 × 9 =
14. 14.49 × 99 =
15. 15.2175 × 999 =
16. 16.6 × 9 =
17. 17.47 × 99 =
18. 18.3 × 9 =
19. 19.46 × 9 =
20. 20.674 × 999 =
21. 21.467 × 999 =
22. 22.163 × 9 =
23. 23.6 × 9 =
24. 24.8 × 9 =
25. 25.557 × 999 =
26. 26.1491 × 99 =
27. 27.8 × 9 =
28. 28.268 × 999 =
29. 29.21 × 999 =
30. 30.71 × 99 =
31. 31.648 × 999 =
32. 32.284 × 999 =
33. 33.89 × 99 =
34. 34.76 × 9 =
35. 35.641 × 999 =
36. 36.3 × 9 =
37. 37.14 × 99 =
38. 38.228 × 9 =
39. 39.215 × 9 =
40. 40.2 × 9 =

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