Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 31 · 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. 1.2064 × 99 =
2. 2.5 × 9 =
3. 3.56 × 99 =
4. 4.3 × 9 =
5. 5.2785 × 99 =
6. 6.7 × 9 =
7. 7.257 × 999 =
8. 8.21 × 99 =
9. 9.6 × 9 =
10. 10.3 × 9 =
11. 11.13574 × 999 =
12. 12.98 × 99 =
13. 13.20096 × 999 =
14. 14.475 × 999 =
15. 15.821 × 999 =
16. 16.7 × 9 =
17. 17.6 × 9 =
18. 18.48 × 99 =
19. 19.224 × 999 =
20. 20.428 × 999 =
21. 21.2617 × 99 =
22. 22.56 × 999 =
23. 23.2 × 9 =
24. 24.93 × 99 =
25. 25.28444 × 999 =
26. 26.8 × 9 =
27. 27.381 × 999 =
28. 28.156 × 9 =
29. 29.326 × 999 =
30. 30.6 × 9 =
31. 31.3 × 9 =
32. 32.4781 × 999 =
33. 33.10619 × 999 =
34. 34.952 × 999 =
35. 35.39 × 99 =
36. 36.2 × 9 =
37. 37.561 × 999 =
38. 38.401 × 99 =
39. 39.4 × 9 =
40. 40.12 × 99 =

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