Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 393 · 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. 1.123 × 9 =
2. 2.76 × 99 =
3. 3.96 × 99 =
4. 4.425 × 999 =
5. 5.17 × 99 =
6. 6.51 × 99 =
7. 7.253 × 9 =
8. 8.21 × 99 =
9. 9.487 × 99 =
10. 10.57 × 99 =
11. 11.51 × 99 =
12. 12.94 × 99 =
13. 13.4 × 9 =
14. 14.76 × 9 =
15. 15.71 × 99 =
16. 16.29 × 99 =
17. 17.5 × 9 =
18. 18.6166 × 999 =
19. 19.11 × 99 =
20. 20.8 × 99 =
21. 21.3 × 99 =
22. 22.94 × 999 =
23. 23.1853 × 99 =
24. 24.16 × 99 =
25. 25.552 × 999 =
26. 26.64 × 99 =
27. 27.5 × 9 =
28. 28.2926 × 99 =
29. 29.91 × 99 =
30. 30.6 × 9 =
31. 31.106 × 9 =
32. 32.15 × 99 =
33. 33.3 × 9 =
34. 34.2734 × 999 =
35. 35.386 × 999 =
36. 36.4 × 9 =
37. 37.411 × 999 =
38. 38.283 × 999 =
39. 39.2414 × 99 =
40. 40.29 × 99 =

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