Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 48 · 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. 1.77 × 99 =
2. 2.1225 × 999 =
3. 3.4 × 9 =
4. 4.2422 × 99 =
5. 5.2842 × 999 =
6. 6.5 × 9 =
7. 7.54 × 99 =
8. 8.92 × 99 =
9. 9.66 × 99 =
10. 10.61 × 99 =
11. 11.321 × 999 =
12. 12.8 × 99 =
13. 13.145 × 9 =
14. 14.13 × 99 =
15. 15.739 × 999 =
16. 16.1804 × 99 =
17. 17.645 × 999 =
18. 18.41 × 999 =
19. 19.18609 × 999 =
20. 20.6 × 9 =
21. 21.3 × 99 =
22. 22.11 × 99 =
23. 23.58 × 99 =
24. 24.1814 × 99 =
25. 25.6 × 99 =
26. 26.88 × 99 =
27. 27.71 × 99 =
28. 28.264 × 999 =
29. 29.10298 × 999 =
30. 30.43 × 99 =
31. 31.42 × 9 =
32. 32.36 × 99 =
33. 33.41 × 99 =
34. 34.5 × 9 =
35. 35.82 × 99 =
36. 36.7 × 9 =
37. 37.77 × 9 =
38. 38.4 × 9 =
39. 39.31 × 9 =
40. 40.38 × 9 =

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