Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 515 · 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. 1.31 × 99 =
2. 2.2811 × 999 =
3. 3.34 × 99 =
4. 4.376 × 99 =
5. 5.75 × 99 =
6. 6.8 × 99 =
7. 7.2028 × 99 =
8. 8.6 × 99 =
9. 9.11 × 99 =
10. 10.7 × 9 =
11. 11.4 × 9 =
12. 12.66 × 99 =
13. 13.8 × 9 =
14. 14.31 × 99 =
15. 15.8 × 9 =
16. 16.371 × 999 =
17. 17.11 × 99 =
18. 18.666 × 999 =
19. 19.68 × 99 =
20. 20.6 × 99 =
21. 21.18 × 9 =
22. 22.2759 × 99 =
23. 23.6 × 9 =
24. 24.4 × 999 =
25. 25.651 × 999 =
26. 26.95 × 99 =
27. 27.6 × 9 =
28. 28.4 × 9 =
29. 29.7 × 9 =
30. 30.7 × 9 =
31. 31.41 × 999 =
32. 32.15726 × 999 =
33. 33.251 × 999 =
34. 34.17501 × 999 =
35. 35.2 × 9 =
36. 36.4 × 9 =
37. 37.9744 × 999 =
38. 38.2746 × 99 =
39. 39.167 × 9 =
40. 40.406 × 999 =

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