Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 29 · 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. 1.66 × 99 =
2. 2.11 × 99 =
3. 3.17 × 99 =
4. 4.3 × 9 =
5. 5.292 × 999 =
6. 6.114 × 999 =
7. 7.91 × 99 =
8. 8.71 × 99 =
9. 9.19647 × 999 =
10. 10.16 × 9 =
11. 11.31 × 99 =
12. 12.935 × 999 =
13. 13.32 × 99 =
14. 14.5 × 9 =
15. 15.4 × 9 =
16. 16.12 × 99 =
17. 17.153 × 9 =
18. 18.2 × 9 =
19. 19.71 × 99 =
20. 20.2555 × 99 =
21. 21.63 × 99 =
22. 22.53 × 9 =
23. 23.7 × 99 =
24. 24.112 × 9 =
25. 25.1857 × 99 =
26. 26.3 × 9 =
27. 27.5 × 9 =
28. 28.7 × 9 =
29. 29.8 × 9 =
30. 30.2691 × 99 =
31. 31.25909 × 999 =
32. 32.22 × 9 =
33. 33.4 × 9 =
34. 34.75 × 99 =
35. 35.92 × 99 =
36. 36.7 × 99 =
37. 37.366 × 999 =
38. 38.56 × 99 =
39. 39.18701 × 999 =
40. 40.5 × 9 =

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