Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 17 · 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. 1.199 × 9 =
2. 2.19 × 99 =
3. 3.3 × 9 =
4. 4.3 × 9 =
5. 5.77 × 99 =
6. 6.2 × 9 =
7. 7.3 × 9 =
8. 8.9811 × 999 =
9. 9.86 × 99 =
10. 10.922 × 999 =
11. 11.883 × 999 =
12. 12.4 × 9 =
13. 13.7 × 9 =
14. 14.16 × 99 =
15. 15.137 × 9 =
16. 16.635 × 99 =
17. 17.7 × 9 =
18. 18.3 × 9 =
19. 19.29 × 99 =
20. 20.2 × 9 =
21. 21.1093 × 99 =
22. 22.18135 × 999 =
23. 23.18297 × 999 =
24. 24.83 × 99 =
25. 25.75 × 99 =
26. 26.4 × 99 =
27. 27.44 × 99 =
28. 28.72 × 99 =
29. 29.966 × 999 =
30. 30.874 × 99 =
31. 31.5079 × 999 =
32. 32.73 × 99 =
33. 33.76 × 99 =
34. 34.91 × 99 =
35. 35.131 × 999 =
36. 36.18 × 99 =
37. 37.67 × 99 =
38. 38.411 × 999 =
39. 39.5 × 9 =
40. 40.35 × 99 =

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