Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 689 · 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. 1.51 × 99 =
2. 2.7 × 9 =
3. 3.18922 × 999 =
4. 4.10024 × 999 =
5. 5.851 × 999 =
6. 6.67 × 999 =
7. 7.732 × 999 =
8. 8.7 × 9 =
9. 9.85 × 99 =
10. 10.15 × 99 =
11. 11.11 × 99 =
12. 12.623 × 999 =
13. 13.5 × 9 =
14. 14.131 × 9 =
15. 15.51 × 99 =
16. 16.267 × 999 =
17. 17.28193 × 999 =
18. 18.6 × 9 =
19. 19.716 × 999 =
20. 20.5 × 9 =
21. 21.61 × 99 =
22. 22.82 × 9 =
23. 23.28 × 99 =
24. 24.14997 × 999 =
25. 25.86 × 99 =
26. 26.319 × 999 =
27. 27.5 × 9 =
28. 28.76 × 99 =
29. 29.2518 × 99 =
30. 30.674 × 999 =
31. 31.51 × 99 =
32. 32.99 × 9 =
33. 33.4 × 9 =
34. 34.1065 × 99 =
35. 35.69 × 99 =
36. 36.6 × 9 =
37. 37.19833 × 999 =
38. 38.24 × 99 =
39. 39.94 × 9 =
40. 40.81 × 99 =

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