Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 16 · 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. 1.1154 × 99 =
2. 2.3275 × 999 =
3. 3.29605 × 999 =
4. 4.19412 × 999 =
5. 5.317 × 999 =
6. 6.14 × 99 =
7. 7.863 × 999 =
8. 8.1245 × 99 =
9. 9.5 × 9 =
10. 10.91 × 99 =
11. 11.6 × 9 =
12. 12.2 × 9 =
13. 13.12743 × 999 =
14. 14.7 × 9 =
15. 15.4 × 9 =
16. 16.2695 × 99 =
17. 17.162 × 999 =
18. 18.98 × 99 =
19. 19.87 × 99 =
20. 20.4 × 9 =
21. 21.1125 × 99 =
22. 22.538 × 999 =
23. 23.461 × 999 =
24. 24.71 × 99 =
25. 25.331 × 999 =
26. 26.23 × 99 =
27. 27.279 × 999 =
28. 28.9004 × 999 =
29. 29.59 × 99 =
30. 30.49 × 99 =
31. 31.8 × 9 =
32. 32.357 × 99 =
33. 33.3 × 9 =
34. 34.63 × 99 =
35. 35.7 × 9 =
36. 36.39 × 99 =
37. 37.22 × 99 =
38. 38.235 × 9 =
39. 39.32 × 99 =
40. 40.187 × 999 =

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