Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 111 · 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. 1.8 × 9 =
2. 2.83 × 99 =
3. 3.2 × 9 =
4. 4.1658 × 99 =
5. 5.191 × 9 =
6. 6.28 × 99 =
7. 7.11 × 99 =
8. 8.6 × 9 =
9. 9.97 × 99 =
10. 10.841 × 999 =
11. 11.911 × 999 =
12. 12.75 × 99 =
13. 13.81 × 99 =
14. 14.26 × 99 =
15. 15.977 × 999 =
16. 16.28656 × 999 =
17. 17.98 × 99 =
18. 18.59 × 99 =
19. 19.61 × 9 =
20. 20.81 × 9 =
21. 21.478 × 99 =
22. 22.833 × 999 =
23. 23.26884 × 999 =
24. 24.6078 × 999 =
25. 25.97 × 99 =
26. 26.6 × 9 =
27. 27.6 × 9 =
28. 28.26715 × 999 =
29. 29.901 × 999 =
30. 30.268 × 999 =
31. 31.71 × 9 =
32. 32.5 × 9 =
33. 33.3284 × 999 =
34. 34.231 × 999 =
35. 35.106 × 9 =
36. 36.156 × 9 =
37. 37.42 × 99 =
38. 38.2 × 9 =
39. 39.3 × 9 =
40. 40.408 × 999 =

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