Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 157 · 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. 1.764 × 99 =
2. 2.2 × 9 =
3. 3.553 × 99 =
4. 4.654 × 999 =
5. 5.16 × 99 =
6. 6.8 × 9 =
7. 7.355 × 999 =
8. 8.38 × 999 =
9. 9.241 × 9 =
10. 10.215 × 9 =
11. 11.5 × 9 =
12. 12.7 × 9 =
13. 13.197 × 999 =
14. 14.3 × 99 =
15. 15.15 × 99 =
16. 16.15507 × 999 =
17. 17.6 × 9 =
18. 18.3 × 9 =
19. 19.824 × 999 =
20. 20.802 × 999 =
21. 21.3 × 9 =
22. 22.52 × 99 =
23. 23.24 × 99 =
24. 24.23 × 99 =
25. 25.293 × 999 =
26. 26.69 × 999 =
27. 27.8 × 9 =
28. 28.6 × 9 =
29. 29.61 × 99 =
30. 30.4 × 9 =
31. 31.147 × 9 =
32. 32.4 × 9 =
33. 33.77 × 99 =
34. 34.1082 × 99 =
35. 35.7 × 9 =
36. 36.65 × 999 =
37. 37.63 × 99 =
38. 38.5 × 9 =
39. 39.49 × 9 =
40. 40.75 × 9 =

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