Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 635 · 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. 1.768 × 999 =
2. 2.526 × 99 =
3. 3.7 × 9 =
4. 4.71 × 99 =
5. 5.5 × 9 =
6. 6.8 × 9 =
7. 7.2 × 9 =
8. 8.5 × 9 =
9. 9.42 × 99 =
10. 10.66 × 99 =
11. 11.8 × 9 =
12. 12.127 × 999 =
13. 13.512 × 999 =
14. 14.42 × 99 =
15. 15.48 × 99 =
16. 16.7 × 9 =
17. 17.7 × 9 =
18. 18.6 × 9 =
19. 19.82 × 999 =
20. 20.92 × 99 =
21. 21.7 × 9 =
22. 22.53 × 99 =
23. 23.5 × 9 =
24. 24.52 × 99 =
25. 25.941 × 999 =
26. 26.987 × 999 =
27. 27.7 × 9 =
28. 28.909 × 999 =
29. 29.29 × 99 =
30. 30.7 × 9 =
31. 31.71 × 99 =
32. 32.1179 × 99 =
33. 33.89 × 99 =
34. 34.1123 × 99 =
35. 35.413 × 999 =
36. 36.85 × 99 =
37. 37.17 × 99 =
38. 38.3 × 9 =
39. 39.61 × 9 =
40. 40.4 × 9 =

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