Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 687 · 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. 2.92 × 99 =
3. 3.37 × 99 =
4. 4.3 × 9 =
5. 5.29 × 99 =
6. 6.21 × 99 =
7. 7.18237 × 999 =
8. 8.1035 × 99 =
9. 9.372 × 999 =
10. 10.2 × 9 =
11. 11.1188 × 99 =
12. 12.89 × 99 =
13. 13.5 × 9 =
14. 14.217 × 9 =
15. 15.2 × 9 =
16. 16.38 × 99 =
17. 17.87 × 99 =
18. 18.583 × 999 =
19. 19.91 × 99 =
20. 20.51 × 9 =
21. 21.51 × 99 =
22. 22.638 × 999 =
23. 23.53 × 99 =
24. 24.49 × 99 =
25. 25.13 × 99 =
26. 26.8691 × 999 =
27. 27.59 × 99 =
28. 28.165 × 9 =
29. 29.31 × 99 =
30. 30.71 × 99 =
31. 31.3 × 9 =
32. 32.807 × 999 =
33. 33.6 × 9 =
34. 34.79 × 99 =
35. 35.64 × 99 =
36. 36.11 × 999 =
37. 37.594 × 999 =
38. 38.8 × 9 =
39. 39.96 × 9 =
40. 40.851 × 999 =

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