Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 286 · 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. 1.644 × 99 =
2. 2.67 × 99 =
3. 3.646 × 99 =
4. 4.13 × 9 =
5. 5.24 × 99 =
6. 6.2 × 9 =
7. 7.129 × 9 =
8. 8.29 × 99 =
9. 9.6 × 9 =
10. 10.211 × 999 =
11. 11.25957 × 999 =
12. 12.17 × 99 =
13. 13.61 × 99 =
14. 14.998 × 999 =
15. 15.5 × 9 =
16. 16.48 × 99 =
17. 17.702 × 99 =
18. 18.3 × 9 =
19. 19.7 × 9 =
20. 20.79 × 99 =
21. 21.311 × 99 =
22. 22.619 × 99 =
23. 23.3 × 9 =
24. 24.7 × 9 =
25. 25.96 × 99 =
26. 26.681 × 999 =
27. 27.4 × 9 =
28. 28.42 × 999 =
29. 29.3 × 9 =
30. 30.4 × 9 =
31. 31.68 × 99 =
32. 32.6 × 9 =
33. 33.92 × 999 =
34. 34.6 × 9 =
35. 35.7 × 9 =
36. 36.3 × 99 =
37. 37.10113 × 999 =
38. 38.8 × 9 =
39. 39.1691 × 999 =
40. 40.593 × 999 =

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