Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 498 · 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. 1.79 × 99 =
2. 2.28 × 99 =
3. 3.2 × 9 =
4. 4.77 × 99 =
5. 5.97 × 99 =
6. 6.81 × 99 =
7. 7.7 × 9 =
8. 8.24 × 99 =
9. 9.3 × 9 =
10. 10.7328 × 999 =
11. 11.252 × 999 =
12. 12.885 × 999 =
13. 13.5 × 9 =
14. 14.219 × 999 =
15. 15.2811 × 99 =
16. 16.3 × 9 =
17. 17.43 × 99 =
18. 18.52 × 99 =
19. 19.2 × 9 =
20. 20.11 × 99 =
21. 21.6 × 9 =
22. 22.5 × 9 =
23. 23.7 × 9 =
24. 24.265 × 9 =
25. 25.767 × 999 =
26. 26.419 × 999 =
27. 27.305 × 99 =
28. 28.7 × 9 =
29. 29.82 × 99 =
30. 30.2 × 9 =
31. 31.524 × 999 =
32. 32.2846 × 99 =
33. 33.2 × 9 =
34. 34.7 × 9 =
35. 35.71 × 99 =
36. 36.11 × 99 =
37. 37.231 × 99 =
38. 38.8 × 9 =
39. 39.7 × 9 =
40. 40.31 × 99 =

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