Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 959 · 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. 1.37 × 99 =
2. 2.12 × 99 =
3. 3.2 × 9 =
4. 4.186 × 99 =
5. 5.6 × 9 =
6. 6.72 × 99 =
7. 7.81 × 99 =
8. 8.745 × 999 =
9. 9.242 × 999 =
10. 10.215 × 999 =
11. 11.6 × 9 =
12. 12.259 × 9 =
13. 13.806 × 999 =
14. 14.93 × 99 =
15. 15.14 × 999 =
16. 16.3 × 9 =
17. 17.58 × 99 =
18. 18.116 × 9 =
19. 19.68 × 99 =
20. 20.448 × 999 =
21. 21.124 × 999 =
22. 22.103 × 9 =
23. 23.8 × 9 =
24. 24.813 × 99 =
25. 25.755 × 999 =
26. 26.7 × 9 =
27. 27.71 × 99 =
28. 28.1331 × 999 =
29. 29.3 × 9 =
30. 30.16866 × 999 =
31. 31.21138 × 999 =
32. 32.49 × 99 =
33. 33.68 × 99 =
34. 34.97 × 99 =
35. 35.287 × 999 =
36. 36.21 × 99 =
37. 37.14 × 99 =
38. 38.129 × 999 =
39. 39.31 × 99 =
40. 40.28 × 99 =

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