Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 278 · 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. 1.77 × 99 =
2. 2.29 × 99 =
3. 3.3 × 9 =
4. 4.68 × 99 =
5. 5.5 × 9 =
6. 6.59 × 99 =
7. 7.41 × 99 =
8. 8.39 × 999 =
9. 9.4 × 9 =
10. 10.101 × 9 =
11. 11.2 × 9 =
12. 12.17676 × 999 =
13. 13.23558 × 999 =
14. 14.6 × 9 =
15. 15.22 × 99 =
16. 16.3671 × 999 =
17. 17.42 × 9 =
18. 18.2 × 9 =
19. 19.92 × 999 =
20. 20.1269 × 999 =
21. 21.21843 × 999 =
22. 22.71 × 99 =
23. 23.8 × 9 =
24. 24.72 × 99 =
25. 25.7 × 9 =
26. 26.349 × 999 =
27. 27.27 × 99 =
28. 28.6438 × 999 =
29. 29.401 × 999 =
30. 30.161 × 9 =
31. 31.53 × 99 =
32. 32.181 × 9 =
33. 33.7944 × 999 =
34. 34.11 × 99 =
35. 35.6 × 99 =
36. 36.762 × 999 =
37. 37.82 × 99 =
38. 38.5 × 9 =
39. 39.6 × 9 =
40. 40.3 × 9 =

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