Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 783 · 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. 1.1441 × 99 =
2. 2.65 × 99 =
3. 3.6 × 9 =
4. 4.25 × 99 =
5. 5.8 × 9 =
6. 6.498 × 99 =
7. 7.347 × 999 =
8. 8.6 × 9 =
9. 9.139 × 9 =
10. 10.551 × 999 =
11. 11.8 × 9 =
12. 12.4 × 9 =
13. 13.6 × 9 =
14. 14.104 × 9 =
15. 15.2 × 9 =
16. 16.828 × 99 =
17. 17.101 × 99 =
18. 18.173 × 9 =
19. 19.206 × 9 =
20. 20.268 × 999 =
21. 21.26708 × 999 =
22. 22.1847 × 99 =
23. 23.8 × 9 =
24. 24.5 × 9 =
25. 25.629 × 999 =
26. 26.4 × 9 =
27. 27.148 × 999 =
28. 28.4 × 9 =
29. 29.318 × 999 =
30. 30.41 × 99 =
31. 31.3 × 9 =
32. 32.943 × 999 =
33. 33.4 × 9 =
34. 34.28 × 99 =
35. 35.169 × 9 =
36. 36.38 × 99 =
37. 37.21 × 9 =
38. 38.36 × 99 =
39. 39.124 × 9 =
40. 40.7 × 9 =

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