Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 921 · 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. 1.3 × 9 =
2. 2.213 × 9 =
3. 3.35 × 999 =
4. 4.831 × 999 =
5. 5.249 × 9 =
6. 6.7 × 9 =
7. 7.5 × 9 =
8. 8.3 × 9 =
9. 9.1728 × 99 =
10. 10.4 × 9 =
11. 11.671 × 999 =
12. 12.62 × 9 =
13. 13.369 × 999 =
14. 14.307 × 99 =
15. 15.462 × 99 =
16. 16.124 × 999 =
17. 17.45 × 99 =
18. 18.956 × 999 =
19. 19.81 × 99 =
20. 20.515 × 999 =
21. 21.124 × 9 =
22. 22.454 × 99 =
23. 23.309 × 99 =
24. 24.3 × 9 =
25. 25.5 × 9 =
26. 26.8 × 9 =
27. 27.3 × 9 =
28. 28.59 × 9 =
29. 29.61 × 99 =
30. 30.51 × 99 =
31. 31.8 × 9 =
32. 32.6 × 9 =
33. 33.331 × 999 =
34. 34.51 × 99 =
35. 35.1011 × 99 =
36. 36.21 × 99 =
37. 37.96 × 999 =
38. 38.256 × 999 =
39. 39.71 × 99 =
40. 40.28 × 999 =

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