Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 631 · 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. 1.519 × 99 =
2. 2.251 × 999 =
3. 3.62 × 99 =
4. 4.26 × 9 =
5. 5.24312 × 999 =
6. 6.618 × 999 =
7. 7.12499 × 999 =
8. 8.29473 × 999 =
9. 9.78 × 99 =
10. 10.149 × 999 =
11. 11.77 × 99 =
12. 12.6 × 9 =
13. 13.6 × 99 =
14. 14.891 × 999 =
15. 15.925 × 999 =
16. 16.478 × 99 =
17. 17.2 × 99 =
18. 18.61 × 99 =
19. 19.4578 × 999 =
20. 20.28 × 99 =
21. 21.1018 × 99 =
22. 22.184 × 9 =
23. 23.4 × 9 =
24. 24.14991 × 999 =
25. 25.4 × 9 =
26. 26.14 × 99 =
27. 27.3 × 9 =
28. 28.73 × 99 =
29. 29.397 × 999 =
30. 30.853 × 999 =
31. 31.304 × 99 =
32. 32.23909 × 999 =
33. 33.3 × 9 =
34. 34.6 × 9 =
35. 35.2 × 9 =
36. 36.83 × 99 =
37. 37.44 × 9 =
38. 38.22 × 99 =
39. 39.107 × 999 =
40. 40.2 × 9 =

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