Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 169 · 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. 1.82 × 99 =
2. 2.1012 × 99 =
3. 3.41 × 99 =
4. 4.178 × 99 =
5. 5.621 × 999 =
6. 6.24 × 99 =
7. 7.8022 × 999 =
8. 8.15 × 99 =
9. 9.751 × 999 =
10. 10.331 × 999 =
11. 11.3 × 9 =
12. 12.34 × 99 =
13. 13.127 × 999 =
14. 14.20934 × 999 =
15. 15.2102 × 99 =
16. 16.2837 × 99 =
17. 17.217 × 9 =
18. 18.39 × 99 =
19. 19.19 × 99 =
20. 20.141 × 999 =
21. 21.575 × 999 =
22. 22.2009 × 99 =
23. 23.898 × 999 =
24. 24.34 × 99 =
25. 25.2 × 9 =
26. 26.71 × 9 =
27. 27.186 × 9 =
28. 28.245 × 9 =
29. 29.17 × 99 =
30. 30.4 × 9 =
31. 31.548 × 999 =
32. 32.6966 × 999 =
33. 33.569 × 999 =
34. 34.91 × 99 =
35. 35.19761 × 999 =
36. 36.54 × 99 =
37. 37.69 × 99 =
38. 38.5 × 9 =
39. 39.311 × 999 =
40. 40.141 × 9 =

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