Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 277 · 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. 1.4 × 9 =
2. 2.441 × 999 =
3. 3.851 × 99 =
4. 4.1761 × 99 =
5. 5.4 × 9 =
6. 6.58 × 99 =
7. 7.194 × 9 =
8. 8.5936 × 999 =
9. 9.1497 × 99 =
10. 10.9 × 99 =
11. 11.20542 × 999 =
12. 12.21 × 99 =
13. 13.711 × 999 =
14. 14.637 × 999 =
15. 15.345 × 999 =
16. 16.71 × 99 =
17. 17.4 × 9 =
18. 18.69 × 99 =
19. 19.1074 × 99 =
20. 20.3 × 99 =
21. 21.20784 × 999 =
22. 22.66 × 99 =
23. 23.7 × 9 =
24. 24.3 × 9 =
25. 25.172 × 9 =
26. 26.5887 × 999 =
27. 27.107 × 9 =
28. 28.5 × 9 =
29. 29.17103 × 999 =
30. 30.11 × 99 =
31. 31.179 × 9 =
32. 32.2 × 9 =
33. 33.4 × 9 =
34. 34.3 × 9 =
35. 35.1598 × 99 =
36. 36.897 × 999 =
37. 37.265 × 9 =
38. 38.29009 × 999 =
39. 39.7 × 9 =
40. 40.28112 × 999 =

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