Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 548 · 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. 1.597 × 999 =
2. 2.71 × 99 =
3. 3.586 × 999 =
4. 4.21 × 99 =
5. 5.1841 × 99 =
6. 6.221 × 999 =
7. 7.28 × 99 =
8. 8.5 × 9 =
9. 9.2 × 9 =
10. 10.62 × 99 =
11. 11.2337 × 99 =
12. 12.29621 × 999 =
13. 13.428 × 999 =
14. 14.162 × 999 =
15. 15.171 × 9 =
16. 16.9 × 99 =
17. 17.735 × 999 =
18. 18.71 × 99 =
19. 19.2059 × 99 =
20. 20.62 × 99 =
21. 21.376 × 999 =
22. 22.397 × 999 =
23. 23.8 × 9 =
24. 24.919 × 999 =
25. 25.41 × 99 =
26. 26.693 × 999 =
27. 27.73 × 99 =
28. 28.49 × 99 =
29. 29.74 × 99 =
30. 30.34 × 99 =
31. 31.779 × 99 =
32. 32.896 × 999 =
33. 33.39 × 99 =
34. 34.2823 × 99 =
35. 35.2 × 99 =
36. 36.801 × 999 =
37. 37.238 × 9 =
38. 38.31 × 99 =
39. 39.7 × 99 =
40. 40.8 × 9 =

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