Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 810 · 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. 1.3 × 99 =
2. 2.16 × 99 =
3. 3.4 × 9 =
4. 4.97 × 99 =
5. 5.77 × 99 =
6. 6.1754 × 99 =
7. 7.121 × 999 =
8. 8.939 × 99 =
9. 9.1235 × 99 =
10. 10.319 × 999 =
11. 11.221 × 9 =
12. 12.11 × 99 =
13. 13.29 × 99 =
14. 14.45 × 99 =
15. 15.54 × 99 =
16. 16.848 × 999 =
17. 17.31 × 999 =
18. 18.44 × 99 =
19. 19.78 × 99 =
20. 20.51 × 9 =
21. 21.94 × 99 =
22. 22.566 × 99 =
23. 23.145 × 999 =
24. 24.69 × 99 =
25. 25.1559 × 99 =
26. 26.7 × 9 =
27. 27.24 × 99 =
28. 28.4 × 9 =
29. 29.914 × 999 =
30. 30.59 × 99 =
31. 31.31 × 99 =
32. 32.8 × 9 =
33. 33.86 × 99 =
34. 34.381 × 999 =
35. 35.613 × 999 =
36. 36.36 × 99 =
37. 37.36 × 99 =
38. 38.701 × 999 =
39. 39.778 × 999 =
40. 40.865 × 999 =

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