Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 489 · 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. 1.43 × 99 =
2. 2.2 × 99 =
3. 3.61 × 99 =
4. 4.27 × 99 =
5. 5.67 × 99 =
6. 6.19721 × 999 =
7. 7.8 × 9 =
8. 8.123 × 9 =
9. 9.28 × 99 =
10. 10.3 × 9 =
11. 11.85 × 99 =
12. 12.73 × 99 =
13. 13.95 × 99 =
14. 14.274 × 999 =
15. 15.12 × 99 =
16. 16.4 × 9 =
17. 17.204 × 9 =
18. 18.659 × 999 =
19. 19.5 × 9 =
20. 20.24 × 999 =
21. 21.248 × 9 =
22. 22.243 × 9 =
23. 23.8 × 9 =
24. 24.651 × 99 =
25. 25.71 × 999 =
26. 26.19 × 99 =
27. 27.16 × 9 =
28. 28.7 × 9 =
29. 29.8 × 9 =
30. 30.81 × 99 =
31. 31.4 × 9 =
32. 32.31 × 99 =
33. 33.782 × 99 =
34. 34.57 × 99 =
35. 35.5651 × 999 =
36. 36.3 × 9 =
37. 37.71 × 99 =
38. 38.17 × 9 =
39. 39.1858 × 99 =
40. 40.334 × 999 =

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