Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 678 · 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. 1.246 × 9 =
2. 2.89 × 9 =
3. 3.62 × 99 =
4. 4.3 × 9 =
5. 5.16163 × 999 =
6. 6.2 × 9 =
7. 7.125 × 9 =
8. 8.2076 × 99 =
9. 9.1059 × 99 =
10. 10.228 × 999 =
11. 11.909 × 999 =
12. 12.24 × 99 =
13. 13.78 × 99 =
14. 14.44 × 99 =
15. 15.5 × 9 =
16. 16.19832 × 999 =
17. 17.6 × 99 =
18. 18.2248 × 99 =
19. 19.31 × 99 =
20. 20.65 × 99 =
21. 21.3 × 9 =
22. 22.3 × 9 =
23. 23.5 × 9 =
24. 24.2 × 9 =
25. 25.9516 × 999 =
26. 26.3 × 9 =
27. 27.46 × 99 =
28. 28.64 × 99 =
29. 29.2645 × 999 =
30. 30.487 × 999 =
31. 31.863 × 999 =
32. 32.47 × 999 =
33. 33.1544 × 99 =
34. 34.357 × 999 =
35. 35.661 × 999 =
36. 36.71 × 9 =
37. 37.116 × 999 =
38. 38.91 × 999 =
39. 39.588 × 99 =
40. 40.5 × 9 =

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