Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 299 · 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. 1.71 × 99 =
2. 2.766 × 999 =
3. 3.886 × 999 =
4. 4.723 × 999 =
5. 5.16557 × 999 =
6. 6.987 × 999 =
7. 7.68 × 99 =
8. 8.33 × 99 =
9. 9.884 × 999 =
10. 10.1909 × 999 =
11. 11.77 × 99 =
12. 12.68 × 99 =
13. 13.76 × 99 =
14. 14.31 × 99 =
15. 15.28 × 99 =
16. 16.518 × 999 =
17. 17.6 × 99 =
18. 18.267 × 9 =
19. 19.459 × 999 =
20. 20.65 × 99 =
21. 21.173 × 9 =
22. 22.28 × 9 =
23. 23.79 × 99 =
24. 24.3 × 9 =
25. 25.99 × 9 =
26. 26.4 × 9 =
27. 27.3 × 9 =
28. 28.11 × 99 =
29. 29.705 × 99 =
30. 30.13287 × 999 =
31. 31.208 × 999 =
32. 32.42 × 99 =
33. 33.741 × 99 =
34. 34.8 × 9 =
35. 35.2606 × 99 =
36. 36.117 × 999 =
37. 37.31 × 99 =
38. 38.6 × 9 =
39. 39.6 × 9 =
40. 40.21 × 99 =

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