Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 199 · 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. 1.41 × 99 =
2. 2.21 × 99 =
3. 3.2 × 9 =
4. 4.211 × 999 =
5. 5.21 × 99 =
6. 6.41 × 99 =
7. 7.96 × 99 =
8. 8.6931 × 999 =
9. 9.85 × 99 =
10. 10.302 × 999 =
11. 11.5 × 9 =
12. 12.9681 × 999 =
13. 13.65 × 99 =
14. 14.31 × 99 =
15. 15.6 × 99 =
16. 16.444 × 999 =
17. 17.3 × 9 =
18. 18.8 × 9 =
19. 19.19 × 99 =
20. 20.3 × 9 =
21. 21.8 × 9 =
22. 22.91 × 99 =
23. 23.17 × 99 =
24. 24.499 × 999 =
25. 25.19092 × 999 =
26. 26.6022 × 999 =
27. 27.148 × 9 =
28. 28.7 × 99 =
29. 29.59 × 99 =
30. 30.251 × 9 =
31. 31.8 × 9 =
32. 32.31 × 99 =
33. 33.41 × 99 =
34. 34.15 × 9 =
35. 35.948 × 99 =
36. 36.4 × 9 =
37. 37.44 × 99 =
38. 38.1738 × 999 =
39. 39.7 × 9 =
40. 40.101 × 999 =

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