Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 907 · 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. 1.5 × 9 =
2. 2.4 × 9 =
3. 3.156 × 9 =
4. 4.239 × 99 =
5. 5.6 × 9 =
6. 6.63 × 999 =
7. 7.209 × 9 =
8. 8.816 × 999 =
9. 9.1185 × 99 =
10. 10.9795 × 999 =
11. 11.319 × 999 =
12. 12.76 × 99 =
13. 13.5 × 9 =
14. 14.21 × 9 =
15. 15.4 × 9 =
16. 16.2 × 9 =
17. 17.191 × 9 =
18. 18.4 × 9 =
19. 19.831 × 999 =
20. 20.2747 × 99 =
21. 21.4 × 9 =
22. 22.2698 × 99 =
23. 23.4 × 99 =
24. 24.448 × 999 =
25. 25.425 × 999 =
26. 26.8 × 9 =
27. 27.27 × 999 =
28. 28.38 × 99 =
29. 29.6 × 9 =
30. 30.8 × 9 =
31. 31.483 × 999 =
32. 32.27 × 99 =
33. 33.725 × 999 =
34. 34.8 × 9 =
35. 35.206 × 9 =
36. 36.778 × 999 =
37. 37.2 × 9 =
38. 38.61 × 9 =
39. 39.89 × 99 =
40. 40.85 × 99 =

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