Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 416 · 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. 1.4 × 9 =
2. 2.21 × 99 =
3. 3.12 × 99 =
4. 4.134 × 9 =
5. 5.617 × 99 =
6. 6.1639 × 99 =
7. 7.142 × 9 =
8. 8.434 × 999 =
9. 9.791 × 999 =
10. 10.13263 × 999 =
11. 11.27723 × 999 =
12. 12.1525 × 99 =
13. 13.616 × 99 =
14. 14.3657 × 999 =
15. 15.293 × 99 =
16. 16.33 × 99 =
17. 17.8 × 9 =
18. 18.55 × 9 =
19. 19.7 × 9 =
20. 20.951 × 999 =
21. 21.285 × 999 =
22. 22.6 × 9 =
23. 23.78 × 99 =
24. 24.2 × 99 =
25. 25.356 × 999 =
26. 26.7 × 9 =
27. 27.89 × 99 =
28. 28.22 × 9 =
29. 29.7 × 9 =
30. 30.2251 × 99 =
31. 31.578 × 999 =
32. 32.4 × 9 =
33. 33.8 × 9 =
34. 34.301 × 99 =
35. 35.24144 × 999 =
36. 36.154 × 9 =
37. 37.2 × 9 =
38. 38.97 × 9 =
39. 39.85 × 9 =
40. 40.173 × 9 =

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