Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 863 · 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. 1.28 × 999 =
2. 2.5 × 9 =
3. 3.5 × 9 =
4. 4.25 × 99 =
5. 5.1462 × 99 =
6. 6.5 × 9 =
7. 7.12857 × 999 =
8. 8.105 × 999 =
9. 9.681 × 99 =
10. 10.81 × 99 =
11. 11.2 × 9 =
12. 12.5 × 99 =
13. 13.24 × 99 =
14. 14.178 × 999 =
15. 15.158 × 999 =
16. 16.361 × 999 =
17. 17.3 × 9 =
18. 18.41 × 9 =
19. 19.211 × 9 =
20. 20.801 × 999 =
21. 21.17 × 99 =
22. 22.565 × 999 =
23. 23.148 × 999 =
24. 24.2538 × 99 =
25. 25.95 × 99 =
26. 26.88 × 99 =
27. 27.2 × 9 =
28. 28.2 × 9 =
29. 29.804 × 99 =
30. 30.4 × 9 =
31. 31.3 × 9 =
32. 32.196 × 9 =
33. 33.911 × 999 =
34. 34.59 × 99 =
35. 35.156 × 999 =
36. 36.81 × 99 =
37. 37.2 × 9 =
38. 38.246 × 9 =
39. 39.81 × 99 =
40. 40.5071 × 999 =

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