Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 53 · 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. 1.44 × 99 =
2. 2.6 × 99 =
3. 3.129 × 9 =
4. 4.56 × 99 =
5. 5.141 × 9 =
6. 6.3 × 9 =
7. 7.1265 × 99 =
8. 8.11 × 999 =
9. 9.5 × 9 =
10. 10.26 × 99 =
11. 11.53 × 9 =
12. 12.4067 × 999 =
13. 13.2 × 9 =
14. 14.43 × 9 =
15. 15.567 × 999 =
16. 16.7 × 9 =
17. 17.131 × 9 =
18. 18.101 × 999 =
19. 19.2048 × 99 =
20. 20.26403 × 999 =
21. 21.621 × 99 =
22. 22.3 × 9 =
23. 23.2 × 9 =
24. 24.628 × 999 =
25. 25.404 × 999 =
26. 26.4 × 9 =
27. 27.11825 × 999 =
28. 28.79 × 99 =
29. 29.3 × 9 =
30. 30.5439 × 999 =
31. 31.2304 × 99 =
32. 32.77 × 9 =
33. 33.23 × 99 =
34. 34.3 × 9 =
35. 35.57 × 99 =
36. 36.10525 × 999 =
37. 37.21 × 99 =
38. 38.223 × 9 =
39. 39.497 × 999 =
40. 40.191 × 999 =

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