Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 731 · 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. 1.163 × 9 =
2. 2.75 × 99 =
3. 3.5 × 9 =
4. 4.29 × 99 =
5. 5.1439 × 99 =
6. 6.2254 × 99 =
7. 7.22 × 99 =
8. 8.4 × 99 =
9. 9.468 × 999 =
10. 10.66 × 999 =
11. 11.53 × 99 =
12. 12.294 × 999 =
13. 13.6 × 9 =
14. 14.47 × 99 =
15. 15.8842 × 999 =
16. 16.5 × 9 =
17. 17.64 × 99 =
18. 18.91 × 99 =
19. 19.1422 × 999 =
20. 20.5 × 9 =
21. 21.212 × 9 =
22. 22.7028 × 999 =
23. 23.10224 × 999 =
24. 24.7 × 9 =
25. 25.51 × 99 =
26. 26.2101 × 99 =
27. 27.212 × 9 =
28. 28.22551 × 999 =
29. 29.75 × 99 =
30. 30.562 × 99 =
31. 31.1363 × 99 =
32. 32.102 × 9 =
33. 33.1647 × 99 =
34. 34.7 × 9 =
35. 35.71 × 99 =
36. 36.2576 × 99 =
37. 37.2 × 99 =
38. 38.6 × 9 =
39. 39.57 × 99 =
40. 40.1682 × 99 =

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