Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 798 · 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. 1.21 × 99 =
2. 2.6 × 9 =
3. 3.6 × 99 =
4. 4.6 × 9 =
5. 5.8 × 9 =
6. 6.829 × 999 =
7. 7.47 × 99 =
8. 8.73 × 99 =
9. 9.535 × 999 =
10. 10.9 × 99 =
11. 11.61 × 99 =
12. 12.1667 × 99 =
13. 13.7 × 9 =
14. 14.1617 × 99 =
15. 15.11 × 99 =
16. 16.6 × 9 =
17. 17.83 × 99 =
18. 18.36 × 99 =
19. 19.71 × 9 =
20. 20.2835 × 99 =
21. 21.881 × 999 =
22. 22.74 × 99 =
23. 23.8 × 99 =
24. 24.17454 × 999 =
25. 25.10691 × 999 =
26. 26.5 × 9 =
27. 27.295 × 999 =
28. 28.13881 × 999 =
29. 29.217 × 9 =
30. 30.5 × 9 =
31. 31.126 × 999 =
32. 32.24952 × 999 =
33. 33.226 × 9 =
34. 34.1594 × 99 =
35. 35.8 × 9 =
36. 36.3 × 9 =
37. 37.7 × 99 =
38. 38.7 × 9 =
39. 39.96 × 99 =
40. 40.22 × 99 =

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