Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 953 · 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. 1.1828 × 99 =
2. 2.51 × 9 =
3. 3.17 × 99 =
4. 4.375 × 99 =
5. 5.1465 × 99 =
6. 6.4 × 9 =
7. 7.61 × 99 =
8. 8.57 × 999 =
9. 9.69 × 9 =
10. 10.16229 × 999 =
11. 11.12 × 99 =
12. 12.4 × 9 =
13. 13.8 × 9 =
14. 14.78 × 99 =
15. 15.118 × 9 =
16. 16.317 × 999 =
17. 17.17 × 9 =
18. 18.2 × 9 =
19. 19.2969 × 99 =
20. 20.885 × 999 =
21. 21.177 × 9 =
22. 22.2 × 9 =
23. 23.2 × 9 =
24. 24.36 × 99 =
25. 25.3 × 9 =
26. 26.5 × 9 =
27. 27.2775 × 99 =
28. 28.26 × 99 =
29. 29.2 × 9 =
30. 30.37 × 99 =
31. 31.5 × 9 =
32. 32.2 × 9 =
33. 33.117 × 99 =
34. 34.4 × 9 =
35. 35.155 × 9 =
36. 36.843 × 999 =
37. 37.1983 × 999 =
38. 38.7 × 99 =
39. 39.816 × 999 =
40. 40.104 × 9 =

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