Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 787 · 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. 1.1325 × 99 =
2. 2.259 × 9 =
3. 3.12 × 99 =
4. 4.98 × 99 =
5. 5.136 × 999 =
6. 6.166 × 9 =
7. 7.21 × 99 =
8. 8.2305 × 99 =
9. 9.721 × 999 =
10. 10.15 × 99 =
11. 11.19 × 99 =
12. 12.94 × 99 =
13. 13.52 × 99 =
14. 14.2 × 9 =
15. 15.78 × 99 =
16. 16.9 × 99 =
17. 17.42 × 99 =
18. 18.541 × 999 =
19. 19.211 × 9 =
20. 20.14 × 99 =
21. 21.1783 × 99 =
22. 22.47 × 99 =
23. 23.55 × 99 =
24. 24.3 × 9 =
25. 25.5 × 9 =
26. 26.3 × 9 =
27. 27.243 × 99 =
28. 28.713 × 999 =
29. 29.16 × 99 =
30. 30.699 × 999 =
31. 31.251 × 999 =
32. 32.2 × 9 =
33. 33.20697 × 999 =
34. 34.78 × 99 =
35. 35.555 × 999 =
36. 36.1052 × 99 =
37. 37.77 × 9 =
38. 38.12 × 99 =
39. 39.63 × 99 =
40. 40.2 × 9 =

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