Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 679 · 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. 1.204 × 9 =
2. 2.59 × 99 =
3. 3.649 × 999 =
4. 4.78 × 99 =
5. 5.654 × 999 =
6. 6.7 × 9 =
7. 7.7 × 9 =
8. 8.6785 × 999 =
9. 9.91 × 9 =
10. 10.8 × 9 =
11. 11.183 × 999 =
12. 12.4 × 9 =
13. 13.195 × 9 =
14. 14.7 × 9 =
15. 15.2 × 9 =
16. 16.21 × 99 =
17. 17.4172 × 999 =
18. 18.109 × 99 =
19. 19.2 × 99 =
20. 20.199 × 999 =
21. 21.6 × 9 =
22. 22.6 × 9 =
23. 23.992 × 999 =
24. 24.49 × 99 =
25. 25.22 × 9 =
26. 26.7 × 9 =
27. 27.3 × 9 =
28. 28.6 × 9 =
29. 29.142 × 9 =
30. 30.32 × 99 =
31. 31.73 × 99 =
32. 32.41 × 99 =
33. 33.36 × 99 =
34. 34.991 × 99 =
35. 35.72 × 99 =
36. 36.11758 × 999 =
37. 37.75 × 9 =
38. 38.2298 × 99 =
39. 39.251 × 9 =
40. 40.1034 × 99 =

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