Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 680 · 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. 1.8 × 99 =
2. 2.91 × 99 =
3. 3.41 × 99 =
4. 4.1608 × 99 =
5. 5.2 × 9 =
6. 6.79 × 99 =
7. 7.6 × 99 =
8. 8.2 × 9 =
9. 9.909 × 999 =
10. 10.125 × 9 =
11. 11.56 × 99 =
12. 12.1632 × 99 =
13. 13.6 × 9 =
14. 14.81 × 99 =
15. 15.4 × 9 =
16. 16.5 × 9 =
17. 17.2948 × 99 =
18. 18.8 × 9 =
19. 19.318 × 99 =
20. 20.82 × 99 =
21. 21.93 × 9 =
22. 22.7 × 9 =
23. 23.39 × 99 =
24. 24.2 × 9 =
25. 25.7 × 9 =
26. 26.71 × 99 =
27. 27.66 × 99 =
28. 28.7 × 9 =
29. 29.8 × 99 =
30. 30.966 × 999 =
31. 31.1447 × 99 =
32. 32.214 × 999 =
33. 33.2 × 9 =
34. 34.26 × 99 =
35. 35.4 × 9 =
36. 36.26 × 99 =
37. 37.95 × 99 =
38. 38.47 × 99 =
39. 39.18 × 99 =
40. 40.768 × 999 =

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