Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 77 · 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. 1.179 × 9 =
2. 2.5 × 9 =
3. 3.7 × 9 =
4. 4.86 × 99 =
5. 5.22 × 99 =
6. 6.554 × 999 =
7. 7.24908 × 999 =
8. 8.6 × 9 =
9. 9.467 × 999 =
10. 10.5 × 9 =
11. 11.2755 × 99 =
12. 12.8 × 9 =
13. 13.3 × 99 =
14. 14.958 × 999 =
15. 15.211 × 9 =
16. 16.1323 × 99 =
17. 17.11 × 99 =
18. 18.661 × 999 =
19. 19.3647 × 999 =
20. 20.8 × 9 =
21. 21.6 × 99 =
22. 22.8 × 9 =
23. 23.116 × 9 =
24. 24.204 × 9 =
25. 25.5 × 99 =
26. 26.301 × 999 =
27. 27.68 × 99 =
28. 28.2 × 9 =
29. 29.91 × 99 =
30. 30.2 × 9 =
31. 31.4 × 9 =
32. 32.1592 × 99 =
33. 33.7 × 9 =
34. 34.795 × 999 =
35. 35.565 × 999 =
36. 36.8 × 9 =
37. 37.5659 × 999 =
38. 38.1385 × 99 =
39. 39.104 × 999 =
40. 40.12 × 99 =

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