Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 979 · 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. 1.2516 × 99 =
2. 2.55 × 99 =
3. 3.42 × 99 =
4. 4.4 × 9 =
5. 5.621 × 999 =
6. 6.82 × 999 =
7. 7.139 × 9 =
8. 8.49 × 9 =
9. 9.3 × 9 =
10. 10.238 × 999 =
11. 11.565 × 99 =
12. 12.4 × 9 =
13. 13.6 × 9 =
14. 14.7 × 9 =
15. 15.33 × 99 =
16. 16.268 × 9 =
17. 17.526 × 999 =
18. 18.692 × 999 =
19. 19.66 × 99 =
20. 20.57 × 999 =
21. 21.87 × 99 =
22. 22.8 × 99 =
23. 23.2 × 9 =
24. 24.461 × 999 =
25. 25.27 × 99 =
26. 26.8959 × 999 =
27. 27.8 × 9 =
28. 28.7 × 9 =
29. 29.124 × 9 =
30. 30.237 × 9 =
31. 31.12 × 99 =
32. 32.71 × 99 =
33. 33.269 × 9 =
34. 34.7 × 9 =
35. 35.17 × 99 =
36. 36.7 × 9 =
37. 37.401 × 999 =
38. 38.845 × 999 =
39. 39.6547 × 999 =
40. 40.856 × 999 =

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