Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 992 · 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. 1.73 × 99 =
2. 2.11818 × 999 =
3. 3.45 × 99 =
4. 4.2541 × 99 =
5. 5.227 × 999 =
6. 6.592 × 999 =
7. 7.5 × 9 =
8. 8.7436 × 999 =
9. 9.5 × 9 =
10. 10.761 × 999 =
11. 11.65 × 99 =
12. 12.14428 × 999 =
13. 13.9451 × 999 =
14. 14.11 × 999 =
15. 15.4 × 9 =
16. 16.87 × 99 =
17. 17.5 × 9 =
18. 18.2 × 9 =
19. 19.189 × 999 =
20. 20.7 × 99 =
21. 21.864 × 999 =
22. 22.3 × 9 =
23. 23.123 × 999 =
24. 24.6 × 9 =
25. 25.2344 × 999 =
26. 26.12 × 99 =
27. 27.201 × 999 =
28. 28.884 × 999 =
29. 29.661 × 999 =
30. 30.183 × 9 =
31. 31.51 × 99 =
32. 32.5 × 99 =
33. 33.6 × 9 =
34. 34.255 × 9 =
35. 35.5 × 99 =
36. 36.211 × 9 =
37. 37.806 × 999 =
38. 38.1523 × 99 =
39. 39.35 × 9 =
40. 40.511 × 999 =

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