Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 509 · 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. 1.899 × 999 =
2. 2.1051 × 99 =
3. 3.341 × 999 =
4. 4.2 × 9 =
5. 5.459 × 99 =
6. 6.98 × 99 =
7. 7.23 × 99 =
8. 8.4 × 9 =
9. 9.1959 × 99 =
10. 10.8148 × 999 =
11. 11.76 × 9 =
12. 12.22 × 99 =
13. 13.811 × 999 =
14. 14.17 × 99 =
15. 15.974 × 999 =
16. 16.866 × 999 =
17. 17.98 × 9 =
18. 18.651 × 999 =
19. 19.29 × 99 =
20. 20.7 × 9 =
21. 21.732 × 999 =
22. 22.178 × 99 =
23. 23.8 × 9 =
24. 24.7 × 9 =
25. 25.8 × 9 =
26. 26.15483 × 999 =
27. 27.751 × 999 =
28. 28.34 × 99 =
29. 29.2575 × 99 =
30. 30.219 × 9 =
31. 31.865 × 999 =
32. 32.82 × 99 =
33. 33.854 × 999 =
34. 34.12429 × 999 =
35. 35.488 × 999 =
36. 36.2 × 9 =
37. 37.18 × 99 =
38. 38.108 × 9 =
39. 39.841 × 999 =
40. 40.995 × 999 =

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