Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 201 · 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. 1.38 × 999 =
2. 2.16 × 99 =
3. 3.73 × 99 =
4. 4.857 × 999 =
5. 5.6 × 9 =
6. 6.41 × 99 =
7. 7.58 × 9 =
8. 8.231 × 999 =
9. 9.819 × 999 =
10. 10.765 × 999 =
11. 11.2 × 9 =
12. 12.9708 × 999 =
13. 13.2021 × 999 =
14. 14.2334 × 99 =
15. 15.187 × 9 =
16. 16.333 × 999 =
17. 17.6 × 9 =
18. 18.807 × 999 =
19. 19.807 × 999 =
20. 20.635 × 99 =
21. 21.62 × 99 =
22. 22.49 × 99 =
23. 23.57 × 99 =
24. 24.41 × 999 =
25. 25.24079 × 999 =
26. 26.5 × 9 =
27. 27.71 × 99 =
28. 28.4 × 9 =
29. 29.106 × 9 =
30. 30.806 × 99 =
31. 31.334 × 99 =
32. 32.74 × 99 =
33. 33.41 × 9 =
34. 34.2 × 99 =
35. 35.752 × 999 =
36. 36.1641 × 99 =
37. 37.2 × 9 =
38. 38.9 × 99 =
39. 39.87 × 99 =
40. 40.75 × 9 =

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