Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 802 · 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. 2.2 × 9 =
3. 3.3 × 9 =
4. 4.156 × 9 =
5. 5.6 × 9 =
6. 6.8 × 999 =
7. 7.7 × 9 =
8. 8.1817 × 99 =
9. 9.4 × 9 =
10. 10.1856 × 99 =
11. 11.88 × 99 =
12. 12.26 × 9 =
13. 13.7 × 9 =
14. 14.75 × 99 =
15. 15.316 × 999 =
16. 16.5 × 9 =
17. 17.33 × 99 =
18. 18.406 × 999 =
19. 19.69 × 99 =
20. 20.19525 × 999 =
21. 21.34 × 99 =
22. 22.4933 × 999 =
23. 23.2 × 9 =
24. 24.2 × 9 =
25. 25.6 × 9 =
26. 26.15 × 99 =
27. 27.25077 × 999 =
28. 28.1576 × 99 =
29. 29.4 × 9 =
30. 30.7 × 9 =
31. 31.17 × 99 =
32. 32.112 × 9 =
33. 33.53 × 99 =
34. 34.1011 × 999 =
35. 35.592 × 999 =
36. 36.908 × 999 =
37. 37.1674 × 99 =
38. 38.268 × 999 =
39. 39.1223 × 99 =
40. 40.2938 × 99 =

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