Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 806 · 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. 1.122 × 99 =
2. 2.2 × 9 =
3. 3.2713 × 99 =
4. 4.192 × 9 =
5. 5.1096 × 99 =
6. 6.6 × 9 =
7. 7.2932 × 99 =
8. 8.3 × 9 =
9. 9.87 × 99 =
10. 10.348 × 999 =
11. 11.34 × 99 =
12. 12.5 × 9 =
13. 13.866 × 99 =
14. 14.258 × 999 =
15. 15.237 × 9 =
16. 16.216 × 999 =
17. 17.29746 × 999 =
18. 18.59 × 99 =
19. 19.63 × 9 =
20. 20.2096 × 99 =
21. 21.76 × 99 =
22. 22.421 × 99 =
23. 23.1798 × 99 =
24. 24.38 × 99 =
25. 25.524 × 999 =
26. 26.3 × 9 =
27. 27.49 × 99 =
28. 28.67 × 99 =
29. 29.61 × 9 =
30. 30.2 × 9 =
31. 31.811 × 999 =
32. 32.234 × 9 =
33. 33.1918 × 99 =
34. 34.3 × 9 =
35. 35.146 × 999 =
36. 36.56 × 99 =
37. 37.742 × 99 =
38. 38.292 × 999 =
39. 39.4 × 9 =
40. 40.333 × 999 =

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