Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 15 · 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. 1.1732 × 99 =
2. 2.7 × 9 =
3. 3.4 × 9 =
4. 4.481 × 999 =
5. 5.87 × 9 =
6. 6.41 × 99 =
7. 7.21412 × 999 =
8. 8.2 × 9 =
9. 9.516 × 999 =
10. 10.76 × 99 =
11. 11.47 × 99 =
12. 12.311 × 999 =
13. 13.52 × 99 =
14. 14.3 × 9 =
15. 15.69 × 99 =
16. 16.8 × 9 =
17. 17.16 × 99 =
18. 18.14 × 99 =
19. 19.3 × 9 =
20. 20.497 × 999 =
21. 21.88 × 99 =
22. 22.69 × 99 =
23. 23.7 × 9 =
24. 24.2 × 9 =
25. 25.434 × 99 =
26. 26.1298 × 99 =
27. 27.7 × 9 =
28. 28.39 × 99 =
29. 29.43 × 99 =
30. 30.101 × 999 =
31. 31.4 × 9 =
32. 32.139 × 9 =
33. 33.181 × 9 =
34. 34.559 × 999 =
35. 35.31 × 9 =
36. 36.323 × 99 =
37. 37.56 × 99 =
38. 38.129 × 9 =
39. 39.37 × 9 =
40. 40.643 × 999 =

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