Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 140 · 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. 1.81 × 99 =
2. 2.81 × 99 =
3. 3.54 × 99 =
4. 4.94 × 99 =
5. 5.138 × 99 =
6. 6.3 × 9 =
7. 7.10862 × 999 =
8. 8.731 × 999 =
9. 9.337 × 999 =
10. 10.5 × 9 =
11. 11.767 × 999 =
12. 12.429 × 999 =
13. 13.42 × 99 =
14. 14.982 × 999 =
15. 15.2105 × 99 =
16. 16.71 × 99 =
17. 17.79 × 99 =
18. 18.1743 × 99 =
19. 19.6 × 9 =
20. 20.52 × 999 =
21. 21.21 × 99 =
22. 22.44 × 99 =
23. 23.82 × 99 =
24. 24.73 × 99 =
25. 25.43 × 99 =
26. 26.13818 × 999 =
27. 27.245 × 999 =
28. 28.21 × 99 =
29. 29.2 × 9 =
30. 30.7 × 9 =
31. 31.5 × 9 =
32. 32.61 × 99 =
33. 33.5 × 9 =
34. 34.3 × 9 =
35. 35.115 × 9 =
36. 36.593 × 999 =
37. 37.823 × 999 =
38. 38.36 × 999 =
39. 39.8 × 9 =
40. 40.19 × 99 =

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