Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 317 · 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. 2.44 × 9 =
3. 3.121 × 9 =
4. 4.17 × 99 =
5. 5.89 × 99 =
6. 6.51 × 99 =
7. 7.21 × 9 =
8. 8.92 × 99 =
9. 9.747 × 999 =
10. 10.4973 × 999 =
11. 11.43 × 99 =
12. 12.775 × 999 =
13. 13.7 × 9 =
14. 14.913 × 999 =
15. 15.29 × 99 =
16. 16.2005 × 99 =
17. 17.18569 × 999 =
18. 18.61 × 999 =
19. 19.19 × 999 =
20. 20.76 × 99 =
21. 21.7 × 9 =
22. 22.283 × 999 =
23. 23.489 × 999 =
24. 24.106 × 999 =
25. 25.8 × 9 =
26. 26.661 × 999 =
27. 27.4 × 9 =
28. 28.6 × 99 =
29. 29.2 × 9 =
30. 30.4 × 9 =
31. 31.5 × 9 =
32. 32.6 × 9 =
33. 33.3 × 9 =
34. 34.37 × 99 =
35. 35.96 × 99 =
36. 36.5 × 9 =
37. 37.8 × 9 =
38. 38.914 × 999 =
39. 39.678 × 999 =
40. 40.21 × 99 =

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