Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 91 · 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. 1.331 × 999 =
2. 2.47 × 9 =
3. 3.141 × 9 =
4. 4.19 × 99 =
5. 5.5 × 9 =
6. 6.66 × 99 =
7. 7.5 × 9 =
8. 8.3 × 9 =
9. 9.201 × 9 =
10. 10.67 × 99 =
11. 11.4 × 9 =
12. 12.27 × 99 =
13. 13.246 × 999 =
14. 14.74 × 9 =
15. 15.103 × 999 =
16. 16.771 × 999 =
17. 17.249 × 999 =
18. 18.196 × 999 =
19. 19.113 × 9 =
20. 20.6 × 9 =
21. 21.61 × 99 =
22. 22.23 × 99 =
23. 23.83 × 99 =
24. 24.3 × 9 =
25. 25.215 × 999 =
26. 26.435 × 999 =
27. 27.904 × 999 =
28. 28.892 × 999 =
29. 29.6 × 9 =
30. 30.17 × 99 =
31. 31.17303 × 999 =
32. 32.7 × 9 =
33. 33.229 × 99 =
34. 34.3 × 9 =
35. 35.48 × 99 =
36. 36.4 × 9 =
37. 37.7 × 9 =
38. 38.15 × 99 =
39. 39.63 × 99 =
40. 40.31 × 99 =

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