Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 488 · 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. 1.374 × 99 =
2. 2.2 × 9 =
3. 3.31 × 99 =
4. 4.114 × 999 =
5. 5.3 × 9 =
6. 6.18 × 9 =
7. 7.12 × 99 =
8. 8.5 × 9 =
9. 9.62 × 99 =
10. 10.13 × 99 =
11. 11.25893 × 999 =
12. 12.3 × 99 =
13. 13.5 × 9 =
14. 14.25349 × 999 =
15. 15.2 × 9 =
16. 16.58 × 99 =
17. 17.425 × 999 =
18. 18.151 × 999 =
19. 19.18184 × 999 =
20. 20.3 × 9 =
21. 21.8 × 99 =
22. 22.4 × 9 =
23. 23.2 × 9 =
24. 24.37 × 999 =
25. 25.41 × 9 =
26. 26.3 × 9 =
27. 27.3 × 9 =
28. 28.195 × 99 =
29. 29.7 × 9 =
30. 30.19 × 99 =
31. 31.5 × 9 =
32. 32.2092 × 99 =
33. 33.29721 × 999 =
34. 34.84 × 99 =
35. 35.39 × 99 =
36. 36.51 × 99 =
37. 37.33 × 99 =
38. 38.14 × 99 =
39. 39.7 × 9 =
40. 40.5 × 9 =

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