Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 435 · 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. 1.7 × 9 =
2. 2.7 × 9 =
3. 3.45 × 99 =
4. 4.358 × 999 =
5. 5.25 × 99 =
6. 6.9 × 99 =
7. 7.41 × 99 =
8. 8.149 × 9 =
9. 9.276 × 999 =
10. 10.16 × 99 =
11. 11.2 × 9 =
12. 12.18 × 99 =
13. 13.8663 × 999 =
14. 14.91 × 99 =
15. 15.165 × 999 =
16. 16.7 × 9 =
17. 17.2622 × 99 =
18. 18.222 × 99 =
19. 19.8 × 9 =
20. 20.18091 × 999 =
21. 21.33 × 99 =
22. 22.63 × 99 =
23. 23.86 × 99 =
24. 24.57 × 9 =
25. 25.954 × 999 =
26. 26.94 × 9 =
27. 27.8 × 9 =
28. 28.125 × 9 =
29. 29.825 × 999 =
30. 30.573 × 999 =
31. 31.2 × 9 =
32. 32.86 × 999 =
33. 33.18421 × 999 =
34. 34.81 × 9 =
35. 35.24 × 99 =
36. 36.17 × 99 =
37. 37.2103 × 99 =
38. 38.84 × 999 =
39. 39.6 × 9 =
40. 40.39 × 999 =

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