Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 464 · 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. 1.98 × 99 =
2. 2.3 × 9 =
3. 3.2006 × 99 =
4. 4.3 × 9 =
5. 5.2 × 9 =
6. 6.57 × 99 =
7. 7.141 × 9 =
8. 8.351 × 999 =
9. 9.494 × 99 =
10. 10.22824 × 999 =
11. 11.673 × 999 =
12. 12.10561 × 999 =
13. 13.74 × 99 =
14. 14.24313 × 999 =
15. 15.3 × 9 =
16. 16.8 × 9 =
17. 17.35 × 99 =
18. 18.71 × 99 =
19. 19.39 × 99 =
20. 20.6 × 9 =
21. 21.31 × 99 =
22. 22.158 × 999 =
23. 23.82 × 99 =
24. 24.5 × 9 =
25. 25.8976 × 999 =
26. 26.122 × 9 =
27. 27.7 × 9 =
28. 28.878 × 999 =
29. 29.6 × 9 =
30. 30.2372 × 99 =
31. 31.61 × 99 =
32. 32.41 × 999 =
33. 33.75 × 99 =
34. 34.34 × 99 =
35. 35.24 × 99 =
36. 36.477 × 999 =
37. 37.734 × 999 =
38. 38.463 × 999 =
39. 39.3 × 9 =
40. 40.49 × 9 =

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