Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 138 · 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. 1.15 × 99 =
2. 2.11 × 99 =
3. 3.8 × 9 =
4. 4.6 × 9 =
5. 5.2 × 9 =
6. 6.1596 × 99 =
7. 7.11 × 99 =
8. 8.21 × 99 =
9. 9.49 × 99 =
10. 10.87 × 9 =
11. 11.3 × 9 =
12. 12.35 × 99 =
13. 13.2242 × 99 =
14. 14.2398 × 999 =
15. 15.8 × 99 =
16. 16.27226 × 999 =
17. 17.431 × 999 =
18. 18.52 × 99 =
19. 19.851 × 999 =
20. 20.26443 × 999 =
21. 21.13 × 99 =
22. 22.1875 × 99 =
23. 23.12224 × 999 =
24. 24.647 × 999 =
25. 25.2 × 9 =
26. 26.217 × 999 =
27. 27.46 × 9 =
28. 28.6 × 9 =
29. 29.17 × 9 =
30. 30.20718 × 999 =
31. 31.26557 × 999 =
32. 32.3 × 9 =
33. 33.251 × 999 =
34. 34.4 × 9 =
35. 35.808 × 999 =
36. 36.83 × 99 =
37. 37.2343 × 99 =
38. 38.789 × 999 =
39. 39.2 × 9 =
40. 40.2495 × 99 =

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