Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 490 · 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. 1.97 × 99 =
2. 2.1261 × 99 =
3. 3.85 × 99 =
4. 4.7 × 9 =
5. 5.6 × 9 =
6. 6.2 × 9 =
7. 7.522 × 999 =
8. 8.2 × 9 =
9. 9.47 × 99 =
10. 10.4853 × 999 =
11. 11.5 × 9 =
12. 12.1187 × 99 =
13. 13.4 × 9 =
14. 14.22 × 999 =
15. 15.8 × 9 =
16. 16.251 × 9 =
17. 17.84 × 99 =
18. 18.3 × 99 =
19. 19.25 × 99 =
20. 20.6 × 9 =
21. 21.29 × 99 =
22. 22.256 × 999 =
23. 23.249 × 9 =
24. 24.7131 × 999 =
25. 25.1181 × 99 =
26. 26.59 × 99 =
27. 27.4 × 9 =
28. 28.3 × 9 =
29. 29.48 × 99 =
30. 30.8 × 9 =
31. 31.259 × 999 =
32. 32.418 × 999 =
33. 33.8 × 9 =
34. 34.436 × 999 =
35. 35.654 × 999 =
36. 36.2 × 99 =
37. 37.24 × 99 =
38. 38.4 × 9 =
39. 39.31 × 99 =
40. 40.26191 × 999 =

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