Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 460 · 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. 1.23 × 99 =
2. 2.73 × 999 =
3. 3.2 × 9 =
4. 4.21383 × 999 =
5. 5.163 × 9 =
6. 6.5 × 9 =
7. 7.5 × 99 =
8. 8.182 × 99 =
9. 9.55 × 99 =
10. 10.3 × 9 =
11. 11.2224 × 99 =
12. 12.31 × 99 =
13. 13.112 × 999 =
14. 14.391 × 999 =
15. 15.27128 × 999 =
16. 16.29 × 99 =
17. 17.846 × 999 =
18. 18.3 × 9 =
19. 19.26483 × 999 =
20. 20.2 × 9 =
21. 21.248 × 999 =
22. 22.2 × 99 =
23. 23.7 × 99 =
24. 24.4 × 9 =
25. 25.5 × 9 =
26. 26.2844 × 99 =
27. 27.657 × 999 =
28. 28.33 × 99 =
29. 29.16 × 99 =
30. 30.5 × 9 =
31. 31.712 × 99 =
32. 32.576 × 999 =
33. 33.181 × 99 =
34. 34.614 × 999 =
35. 35.16467 × 999 =
36. 36.231 × 9 =
37. 37.2 × 9 =
38. 38.533 × 999 =
39. 39.5 × 9 =
40. 40.4 × 9 =

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