Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 669 · 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. 1.2097 × 99 =
2. 2.68 × 9 =
3. 3.772 × 99 =
4. 4.4 × 9 =
5. 5.7 × 9 =
6. 6.61 × 99 =
7. 7.24 × 9 =
8. 8.89 × 99 =
9. 9.601 × 999 =
10. 10.2 × 9 =
11. 11.5727 × 999 =
12. 12.295 × 999 =
13. 13.22673 × 999 =
14. 14.6 × 9 =
15. 15.881 × 999 =
16. 16.65 × 99 =
17. 17.554 × 999 =
18. 18.3 × 9 =
19. 19.594 × 99 =
20. 20.2 × 9 =
21. 21.41 × 99 =
22. 22.21539 × 999 =
23. 23.22466 × 999 =
24. 24.7 × 9 =
25. 25.3 × 9 =
26. 26.401 × 999 =
27. 27.36 × 99 =
28. 28.55 × 99 =
29. 29.3 × 9 =
30. 30.22377 × 999 =
31. 31.75 × 9 =
32. 32.197 × 999 =
33. 33.681 × 99 =
34. 34.15 × 999 =
35. 35.7 × 9 =
36. 36.2 × 99 =
37. 37.454 × 999 =
38. 38.51 × 99 =
39. 39.7 × 9 =
40. 40.7 × 9 =

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