Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 392 · 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. 2.5 × 99 =
3. 3.2 × 9 =
4. 4.961 × 999 =
5. 5.61 × 99 =
6. 6.6 × 9 =
7. 7.2 × 9 =
8. 8.382 × 999 =
9. 9.3145 × 999 =
10. 10.2 × 9 =
11. 11.6 × 9 =
12. 12.156 × 9 =
13. 13.13015 × 999 =
14. 14.21966 × 999 =
15. 15.269 × 9 =
16. 16.459 × 999 =
17. 17.2 × 9 =
18. 18.194 × 9 =
19. 19.91 × 9 =
20. 20.1328 × 99 =
21. 21.991 × 999 =
22. 22.1033 × 99 =
23. 23.8 × 9 =
24. 24.8 × 9 =
25. 25.28137 × 999 =
26. 26.936 × 999 =
27. 27.39 × 99 =
28. 28.13 × 99 =
29. 29.971 × 999 =
30. 30.9 × 99 =
31. 31.43 × 99 =
32. 32.2702 × 99 =
33. 33.45 × 99 =
34. 34.228 × 999 =
35. 35.4 × 9 =
36. 36.3 × 9 =
37. 37.24 × 9 =
38. 38.559 × 999 =
39. 39.52 × 9 =
40. 40.625 × 999 =

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