Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 714 · 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. 1.115 × 999 =
2. 2.101 × 999 =
3. 3.63 × 99 =
4. 4.67 × 99 =
5. 5.3 × 9 =
6. 6.29 × 99 =
7. 7.613 × 999 =
8. 8.48 × 99 =
9. 9.4 × 9 =
10. 10.2 × 9 =
11. 11.594 × 999 =
12. 12.4 × 9 =
13. 13.39 × 99 =
14. 14.105 × 9 =
15. 15.5 × 9 =
16. 16.731 × 999 =
17. 17.69 × 99 =
18. 18.2 × 99 =
19. 19.1817 × 99 =
20. 20.5 × 9 =
21. 21.223 × 999 =
22. 22.2281 × 99 =
23. 23.6 × 9 =
24. 24.3 × 9 =
25. 25.78 × 9 =
26. 26.17 × 999 =
27. 27.2892 × 99 =
28. 28.601 × 999 =
29. 29.71 × 99 =
30. 30.3 × 9 =
31. 31.145 × 9 =
32. 32.983 × 999 =
33. 33.298 × 99 =
34. 34.2198 × 99 =
35. 35.6 × 9 =
36. 36.43 × 99 =
37. 37.7 × 9 =
38. 38.35 × 99 =
39. 39.7 × 9 =
40. 40.2634 × 99 =

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