Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 661 · 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. 2.16473 × 999 =
3. 3.193 × 999 =
4. 4.37 × 99 =
5. 5.461 × 999 =
6. 6.3 × 9 =
7. 7.43 × 99 =
8. 8.5 × 9 =
9. 9.761 × 999 =
10. 10.681 × 999 =
11. 11.577 × 999 =
12. 12.77 × 9 =
13. 13.2719 × 99 =
14. 14.703 × 999 =
15. 15.18 × 99 =
16. 16.259 × 9 =
17. 17.69 × 99 =
18. 18.103 × 9 =
19. 19.4651 × 999 =
20. 20.3 × 9 =
21. 21.31 × 99 =
22. 22.2067 × 99 =
23. 23.353 × 99 =
24. 24.39 × 9 =
25. 25.1599 × 99 =
26. 26.2411 × 99 =
27. 27.68 × 99 =
28. 28.1184 × 99 =
29. 29.106 × 999 =
30. 30.6 × 99 =
31. 31.2199 × 99 =
32. 32.7 × 9 =
33. 33.3 × 9 =
34. 34.811 × 999 =
35. 35.149 × 9 =
36. 36.74 × 99 =
37. 37.256 × 999 =
38. 38.5 × 9 =
39. 39.8 × 9 =
40. 40.8 × 9 =

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