Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 660 · 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. 1.52 × 99 =
2. 2.76 × 99 =
3. 3.8 × 9 =
4. 4.6341 × 999 =
5. 5.1305 × 99 =
6. 6.8 × 9 =
7. 7.45 × 9 =
8. 8.11 × 99 =
9. 9.20917 × 999 =
10. 10.74 × 99 =
11. 11.2 × 9 =
12. 12.6 × 9 =
13. 13.45 × 99 =
14. 14.46 × 99 =
15. 15.5 × 9 =
16. 16.28 × 9 =
17. 17.92 × 999 =
18. 18.146 × 999 =
19. 19.48 × 9 =
20. 20.1705 × 99 =
21. 21.492 × 999 =
22. 22.101 × 9 =
23. 23.45 × 9 =
24. 24.83 × 999 =
25. 25.76 × 99 =
26. 26.264 × 999 =
27. 27.2427 × 99 =
28. 28.2967 × 99 =
29. 29.828 × 999 =
30. 30.8 × 9 =
31. 31.8 × 9 =
32. 32.12 × 9 =
33. 33.26 × 99 =
34. 34.5 × 9 =
35. 35.1149 × 99 =
36. 36.29621 × 999 =
37. 37.627 × 999 =
38. 38.246 × 999 =
39. 39.69 × 999 =
40. 40.4 × 9 =

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