Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 890 · 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. 1.81 × 9 =
2. 2.2 × 9 =
3. 3.109 × 9 =
4. 4.17146 × 999 =
5. 5.8 × 9 =
6. 6.73 × 99 =
7. 7.8 × 9 =
8. 8.24987 × 999 =
9. 9.6 × 9 =
10. 10.176 × 9 =
11. 11.498 × 999 =
12. 12.9521 × 999 =
13. 13.68 × 99 =
14. 14.28341 × 999 =
15. 15.6 × 9 =
16. 16.13 × 99 =
17. 17.63 × 999 =
18. 18.84 × 99 =
19. 19.51 × 99 =
20. 20.161 × 999 =
21. 21.58 × 99 =
22. 22.36 × 99 =
23. 23.251 × 9 =
24. 24.3 × 9 =
25. 25.2422 × 99 =
26. 26.64 × 99 =
27. 27.2 × 9 =
28. 28.29 × 99 =
29. 29.1248 × 99 =
30. 30.488 × 999 =
31. 31.5 × 99 =
32. 32.41 × 99 =
33. 33.7 × 9 =
34. 34.7 × 9 =
35. 35.84 × 99 =
36. 36.18 × 99 =
37. 37.47 × 99 =
38. 38.7611 × 999 =
39. 39.445 × 999 =
40. 40.8 × 9 =

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