Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 818 · 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. 1.592 × 999 =
2. 2.8 × 9 =
3. 3.2 × 9 =
4. 4.69 × 99 =
5. 5.7 × 99 =
6. 6.6 × 99 =
7. 7.3 × 9 =
8. 8.2 × 9 =
9. 9.191 × 9 =
10. 10.533 × 999 =
11. 11.4 × 9 =
12. 12.21 × 99 =
13. 13.23 × 9 =
14. 14.27 × 99 =
15. 15.63 × 99 =
16. 16.46 × 99 =
17. 17.3 × 9 =
18. 18.5 × 9 =
19. 19.898 × 99 =
20. 20.97 × 99 =
21. 21.409 × 99 =
22. 22.157 × 9 =
23. 23.10788 × 999 =
24. 24.31 × 99 =
25. 25.11 × 99 =
26. 26.95 × 99 =
27. 27.708 × 999 =
28. 28.295 × 999 =
29. 29.5 × 9 =
30. 30.44 × 99 =
31. 31.4 × 9 =
32. 32.583 × 999 =
33. 33.595 × 99 =
34. 34.89 × 99 =
35. 35.3 × 9 =
36. 36.3 × 9 =
37. 37.2 × 9 =
38. 38.52 × 99 =
39. 39.17561 × 999 =
40. 40.41 × 99 =

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