Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 822 · 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. 2.3527 × 999 =
3. 3.1734 × 99 =
4. 4.56 × 99 =
5. 5.6 × 9 =
6. 6.27315 × 999 =
7. 7.2 × 9 =
8. 8.24201 × 999 =
9. 9.7 × 9 =
10. 10.2 × 9 =
11. 11.922 × 999 =
12. 12.6 × 9 =
13. 13.32 × 99 =
14. 14.6 × 9 =
15. 15.215 × 9 =
16. 16.133 × 9 =
17. 17.6 × 9 =
18. 18.143 × 9 =
19. 19.2657 × 99 =
20. 20.36 × 99 =
21. 21.81 × 99 =
22. 22.20284 × 999 =
23. 23.7 × 9 =
24. 24.62 × 99 =
25. 25.2 × 9 =
26. 26.2789 × 99 =
27. 27.144 × 9 =
28. 28.3 × 9 =
29. 29.5 × 9 =
30. 30.28 × 99 =
31. 31.8 × 9 =
32. 32.891 × 999 =
33. 33.75 × 9 =
34. 34.942 × 99 =
35. 35.61 × 99 =
36. 36.126 × 999 =
37. 37.5 × 9 =
38. 38.5 × 9 =
39. 39.3 × 9 =
40. 40.105 × 999 =

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