Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 879 · 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. 1.151 × 999 =
2. 2.27345 × 999 =
3. 3.714 × 999 =
4. 4.2 × 99 =
5. 5.204 × 9 =
6. 6.759 × 999 =
7. 7.39 × 99 =
8. 8.6 × 9 =
9. 9.211 × 999 =
10. 10.9 × 99 =
11. 11.261 × 9 =
12. 12.24 × 9 =
13. 13.8 × 9 =
14. 14.2461 × 999 =
15. 15.16 × 99 =
16. 16.8 × 9 =
17. 17.184 × 999 =
18. 18.442 × 999 =
19. 19.65 × 99 =
20. 20.4 × 9 =
21. 21.13 × 99 =
22. 22.47 × 99 =
23. 23.4 × 9 =
24. 24.64 × 999 =
25. 25.42 × 99 =
26. 26.926 × 999 =
27. 27.8502 × 999 =
28. 28.5 × 9 =
29. 29.11 × 99 =
30. 30.31 × 9 =
31. 31.143 × 9 =
32. 32.7 × 9 =
33. 33.1884 × 99 =
34. 34.71 × 99 =
35. 35.2231 × 99 =
36. 36.3 × 9 =
37. 37.2 × 9 =
38. 38.185 × 9 =
39. 39.6 × 9 =
40. 40.34 × 99 =

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