Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 493 · 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. 1.2792 × 99 =
2. 2.5 × 9 =
3. 3.996 × 99 =
4. 4.96 × 99 =
5. 5.177 × 9 =
6. 6.335 × 99 =
7. 7.5 × 9 =
8. 8.2 × 9 =
9. 9.3 × 9 =
10. 10.9 × 99 =
11. 11.179 × 9 =
12. 12.8 × 9 =
13. 13.61 × 99 =
14. 14.1353 × 99 =
15. 15.747 × 99 =
16. 16.2 × 9 =
17. 17.951 × 999 =
18. 18.51 × 99 =
19. 19.6364 × 999 =
20. 20.6 × 999 =
21. 21.6 × 9 =
22. 22.28611 × 999 =
23. 23.2382 × 99 =
24. 24.415 × 999 =
25. 25.74 × 9 =
26. 26.744 × 999 =
27. 27.42 × 99 =
28. 28.2 × 9 =
29. 29.527 × 999 =
30. 30.28 × 9 =
31. 31.12098 × 999 =
32. 32.65 × 99 =
33. 33.2 × 9 =
34. 34.67 × 99 =
35. 35.13358 × 999 =
36. 36.31 × 99 =
37. 37.96 × 9 =
38. 38.19597 × 999 =
39. 39.1429 × 99 =
40. 40.48 × 99 =

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