Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 722 · 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. 1.6 × 9 =
2. 2.2958 × 99 =
3. 3.585 × 99 =
4. 4.6 × 9 =
5. 5.965 × 999 =
6. 6.24 × 99 =
7. 7.972 × 999 =
8. 8.167 × 99 =
9. 9.1209 × 99 =
10. 10.771 × 99 =
11. 11.475 × 99 =
12. 12.3 × 9 =
13. 13.63 × 99 =
14. 14.1479 × 99 =
15. 15.3 × 9 =
16. 16.65 × 99 =
17. 17.15084 × 999 =
18. 18.2332 × 99 =
19. 19.51 × 99 =
20. 20.2 × 9 =
21. 21.16 × 99 =
22. 22.151 × 999 =
23. 23.15769 × 999 =
24. 24.94 × 99 =
25. 25.79 × 99 =
26. 26.5342 × 999 =
27. 27.512 × 999 =
28. 28.834 × 999 =
29. 29.75 × 99 =
30. 30.5 × 9 =
31. 31.39 × 999 =
32. 32.66 × 9 =
33. 33.86 × 99 =
34. 34.8 × 9 =
35. 35.37 × 99 =
36. 36.21 × 99 =
37. 37.24 × 9 =
38. 38.96 × 99 =
39. 39.28048 × 999 =
40. 40.10547 × 999 =

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