Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 152 · 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. 1.97 × 99 =
2. 2.195 × 999 =
3. 3.37 × 999 =
4. 4.44 × 99 =
5. 5.2442 × 99 =
6. 6.145 × 999 =
7. 7.341 × 999 =
8. 8.3 × 9 =
9. 9.3 × 9 =
10. 10.954 × 999 =
11. 11.7 × 9 =
12. 12.825 × 999 =
13. 13.34 × 99 =
14. 14.125 × 9 =
15. 15.697 × 999 =
16. 16.863 × 99 =
17. 17.31 × 99 =
18. 18.31 × 99 =
19. 19.1051 × 99 =
20. 20.4 × 9 =
21. 21.6 × 9 =
22. 22.3 × 9 =
23. 23.532 × 999 =
24. 24.2 × 9 =
25. 25.1638 × 99 =
26. 26.8 × 9 =
27. 27.3 × 9 =
28. 28.213 × 9 =
29. 29.93 × 99 =
30. 30.1714 × 99 =
31. 31.107 × 9 =
32. 32.81 × 99 =
33. 33.287 × 999 =
34. 34.697 × 999 =
35. 35.25 × 99 =
36. 36.11 × 99 =
37. 37.497 × 99 =
38. 38.52 × 99 =
39. 39.328 × 99 =
40. 40.5 × 9 =

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