Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 456 · 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. 1.31 × 99 =
2. 2.2 × 9 =
3. 3.6 × 9 =
4. 4.86 × 9 =
5. 5.3 × 9 =
6. 6.89 × 9 =
7. 7.202 × 999 =
8. 8.504 × 999 =
9. 9.8 × 9 =
10. 10.35 × 99 =
11. 11.57 × 9 =
12. 12.81 × 99 =
13. 13.213 × 999 =
14. 14.51 × 99 =
15. 15.6 × 9 =
16. 16.86 × 9 =
17. 17.76 × 99 =
18. 18.58 × 99 =
19. 19.2641 × 99 =
20. 20.1777 × 99 =
21. 21.6 × 9 =
22. 22.3 × 9 =
23. 23.871 × 999 =
24. 24.161 × 999 =
25. 25.465 × 999 =
26. 26.45 × 99 =
27. 27.5758 × 999 =
28. 28.39 × 99 =
29. 29.61 × 99 =
30. 30.688 × 999 =
31. 31.87 × 99 =
32. 32.21 × 9 =
33. 33.31 × 99 =
34. 34.3009 × 999 =
35. 35.359 × 999 =
36. 36.375 × 999 =
37. 37.17 × 99 =
38. 38.644 × 999 =
39. 39.73 × 99 =
40. 40.3 × 9 =

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