Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 100 · 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. 1.13 × 99 =
2. 2.5 × 9 =
3. 3.732 × 99 =
4. 4.3 × 9 =
5. 5.53 × 9 =
6. 6.42 × 99 =
7. 7.16457 × 999 =
8. 8.6 × 9 =
9. 9.135 × 9 =
10. 10.839 × 999 =
11. 11.356 × 999 =
12. 12.1509 × 99 =
13. 13.571 × 999 =
14. 14.2 × 9 =
15. 15.13908 × 999 =
16. 16.2 × 9 =
17. 17.726 × 999 =
18. 18.2 × 9 =
19. 19.6 × 9 =
20. 20.213 × 999 =
21. 21.19808 × 999 =
22. 22.4796 × 999 =
23. 23.6 × 9 =
24. 24.9 × 99 =
25. 25.6754 × 999 =
26. 26.38 × 99 =
27. 27.76 × 99 =
28. 28.34 × 99 =
29. 29.36 × 99 =
30. 30.53 × 99 =
31. 31.5 × 99 =
32. 32.46 × 9 =
33. 33.2133 × 99 =
34. 34.116 × 9 =
35. 35.456 × 999 =
36. 36.74 × 99 =
37. 37.417 × 999 =
38. 38.97 × 99 =
39. 39.728 × 99 =
40. 40.721 × 999 =

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