Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 910 · 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. 1.655 × 999 =
2. 2.161 × 999 =
3. 3.186 × 9 =
4. 4.97 × 99 =
5. 5.18837 × 999 =
6. 6.68 × 99 =
7. 7.82 × 99 =
8. 8.4 × 9 =
9. 9.791 × 99 =
10. 10.732 × 999 =
11. 11.81 × 99 =
12. 12.7 × 9 =
13. 13.174 × 999 =
14. 14.79 × 999 =
15. 15.16 × 99 =
16. 16.81 × 99 =
17. 17.23 × 99 =
18. 18.7 × 9 =
19. 19.7 × 9 =
20. 20.447 × 999 =
21. 21.896 × 999 =
22. 22.3 × 9 =
23. 23.95 × 999 =
24. 24.53 × 99 =
25. 25.96 × 9 =
26. 26.601 × 999 =
27. 27.25521 × 999 =
28. 28.96 × 99 =
29. 29.723 × 999 =
30. 30.2 × 9 =
31. 31.17 × 99 =
32. 32.15711 × 999 =
33. 33.2667 × 99 =
34. 34.7 × 9 =
35. 35.82 × 9 =
36. 36.1343 × 99 =
37. 37.273 × 999 =
38. 38.41 × 99 =
39. 39.21 × 99 =
40. 40.2 × 9 =

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