Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 827 · 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. 1.79 × 99 =
2. 2.1321 × 99 =
3. 3.5 × 9 =
4. 4.8012 × 999 =
5. 5.25789 × 999 =
6. 6.65 × 99 =
7. 7.5 × 9 =
8. 8.2 × 9 =
9. 9.14665 × 999 =
10. 10.8 × 9 =
11. 11.26944 × 999 =
12. 12.16761 × 999 =
13. 13.244 × 9 =
14. 14.2 × 99 =
15. 15.781 × 999 =
16. 16.95 × 9 =
17. 17.7 × 9 =
18. 18.9654 × 999 =
19. 19.7 × 9 =
20. 20.38 × 99 =
21. 21.2 × 99 =
22. 22.158 × 9 =
23. 23.65 × 99 =
24. 24.21 × 99 =
25. 25.97 × 99 =
26. 26.3 × 9 =
27. 27.6 × 9 =
28. 28.7 × 9 =
29. 29.34 × 99 =
30. 30.2 × 9 =
31. 31.471 × 999 =
32. 32.143 × 999 =
33. 33.2 × 9 =
34. 34.5 × 9 =
35. 35.976 × 999 =
36. 36.284 × 999 =
37. 37.671 × 99 =
38. 38.51 × 99 =
39. 39.5 × 9 =
40. 40.17098 × 999 =

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