Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 668 · 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. 1.2202 × 99 =
2. 2.26 × 99 =
3. 3.6 × 9 =
4. 4.2425 × 99 =
5. 5.7 × 9 =
6. 6.2349 × 99 =
7. 7.4 × 9 =
8. 8.7 × 9 =
9. 9.323 × 999 =
10. 10.11 × 9 =
11. 11.13 × 99 =
12. 12.8 × 9 =
13. 13.24976 × 999 =
14. 14.2088 × 99 =
15. 15.8753 × 999 =
16. 16.16 × 99 =
17. 17.21 × 99 =
18. 18.38 × 99 =
19. 19.8 × 9 =
20. 20.12 × 99 =
21. 21.43 × 99 =
22. 22.87 × 9 =
23. 23.735 × 999 =
24. 24.83 × 99 =
25. 25.1241 × 99 =
26. 26.472 × 999 =
27. 27.3 × 9 =
28. 28.6 × 9 =
29. 29.21458 × 999 =
30. 30.39 × 99 =
31. 31.2 × 9 =
32. 32.38 × 99 =
33. 33.91 × 99 =
34. 34.48 × 99 =
35. 35.58 × 99 =
36. 36.2 × 99 =
37. 37.1566 × 99 =
38. 38.29 × 99 =
39. 39.44 × 99 =
40. 40.2706 × 99 =

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