Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 873 · 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. 1.6 × 9 =
2. 2.69 × 99 =
3. 3.3 × 9 =
4. 4.51 × 9 =
5. 5.187 × 9 =
6. 6.37 × 99 =
7. 7.87 × 99 =
8. 8.4061 × 999 =
9. 9.656 × 999 =
10. 10.11 × 9 =
11. 11.5 × 9 =
12. 12.7 × 9 =
13. 13.657 × 999 =
14. 14.95 × 99 =
15. 15.329 × 999 =
16. 16.51 × 99 =
17. 17.77 × 99 =
18. 18.2273 × 99 =
19. 19.798 × 999 =
20. 20.6 × 9 =
21. 21.2232 × 99 =
22. 22.16 × 99 =
23. 23.21688 × 999 =
24. 24.89 × 99 =
25. 25.9 × 99 =
26. 26.2 × 9 =
27. 27.887 × 999 =
28. 28.573 × 999 =
29. 29.2797 × 99 =
30. 30.4 × 9 =
31. 31.1352 × 99 =
32. 32.8 × 9 =
33. 33.675 × 999 =
34. 34.86 × 99 =
35. 35.442 × 999 =
36. 36.58 × 99 =
37. 37.8 × 9 =
38. 38.563 × 999 =
39. 39.444 × 99 =
40. 40.41 × 99 =

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