Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 707 · 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. 1.235 × 9 =
2. 2.8931 × 999 =
3. 3.108 × 9 =
4. 4.4 × 9 =
5. 5.793 × 999 =
6. 6.1734 × 99 =
7. 7.91 × 99 =
8. 8.12298 × 999 =
9. 9.34 × 99 =
10. 10.1097 × 99 =
11. 11.6 × 9 =
12. 12.662 × 999 =
13. 13.829 × 999 =
14. 14.5 × 9 =
15. 15.686 × 999 =
16. 16.223 × 9 =
17. 17.8 × 9 =
18. 18.371 × 999 =
19. 19.1511 × 999 =
20. 20.44 × 99 =
21. 21.135 × 999 =
22. 22.20991 × 999 =
23. 23.6 × 9 =
24. 24.19 × 99 =
25. 25.91 × 99 =
26. 26.33 × 99 =
27. 27.292 × 99 =
28. 28.1293 × 99 =
29. 29.91 × 9 =
30. 30.2858 × 99 =
31. 31.3 × 9 =
32. 32.3 × 9 =
33. 33.8 × 9 =
34. 34.3555 × 999 =
35. 35.538 × 999 =
36. 36.1757 × 99 =
37. 37.6893 × 999 =
38. 38.226 × 999 =
39. 39.25 × 99 =
40. 40.15 × 99 =

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