Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 380 · 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. 1.1964 × 99 =
2. 2.79 × 99 =
3. 3.96 × 99 =
4. 4.201 × 999 =
5. 5.1831 × 99 =
6. 6.408 × 999 =
7. 7.95 × 99 =
8. 8.51 × 99 =
9. 9.12629 × 999 =
10. 10.226 × 9 =
11. 11.4 × 9 =
12. 12.387 × 999 =
13. 13.22 × 99 =
14. 14.7705 × 999 =
15. 15.3 × 99 =
16. 16.571 × 999 =
17. 17.83 × 99 =
18. 18.49 × 99 =
19. 19.98 × 99 =
20. 20.6 × 9 =
21. 21.15 × 99 =
22. 22.16105 × 999 =
23. 23.1613 × 99 =
24. 24.4 × 9 =
25. 25.3 × 9 =
26. 26.65 × 9 =
27. 27.2 × 9 =
28. 28.904 × 999 =
29. 29.38 × 99 =
30. 30.125 × 9 =
31. 31.8 × 9 =
32. 32.2 × 9 =
33. 33.8 × 9 =
34. 34.66 × 99 =
35. 35.81 × 99 =
36. 36.149 × 9 =
37. 37.8 × 9 =
38. 38.2223 × 99 =
39. 39.64 × 99 =
40. 40.4 × 9 =

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