Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 144 · 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. 1.4 × 9 =
2. 2.258 × 9 =
3. 3.3 × 99 =
4. 4.461 × 99 =
5. 5.863 × 999 =
6. 6.1738 × 99 =
7. 7.13 × 9 =
8. 8.181 × 999 =
9. 9.48 × 99 =
10. 10.7 × 9 =
11. 11.31 × 99 =
12. 12.5 × 9 =
13. 13.465 × 99 =
14. 14.38 × 9 =
15. 15.527 × 99 =
16. 16.161 × 9 =
17. 17.77 × 99 =
18. 18.2 × 9 =
19. 19.197 × 999 =
20. 20.65 × 999 =
21. 21.216 × 999 =
22. 22.7 × 9 =
23. 23.487 × 999 =
24. 24.292 × 999 =
25. 25.34 × 99 =
26. 26.242 × 999 =
27. 27.1084 × 99 =
28. 28.79 × 99 =
29. 29.48 × 99 =
30. 30.8 × 9 =
31. 31.3 × 9 =
32. 32.2 × 9 =
33. 33.6 × 9 =
34. 34.81 × 99 =
35. 35.5 × 9 =
36. 36.42 × 99 =
37. 37.3 × 9 =
38. 38.5 × 9 =
39. 39.109 × 9 =
40. 40.8 × 9 =

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