Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 728 · 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. 1.151 × 999 =
2. 2.564 × 999 =
3. 3.6 × 9 =
4. 4.3 × 9 =
5. 5.869 × 999 =
6. 6.1774 × 99 =
7. 7.76 × 99 =
8. 8.8 × 9 =
9. 9.251 × 9 =
10. 10.51 × 99 =
11. 11.479 × 999 =
12. 12.62 × 99 =
13. 13.821 × 999 =
14. 14.93 × 99 =
15. 15.441 × 999 =
16. 16.3 × 9 =
17. 17.122 × 9 =
18. 18.1876 × 99 =
19. 19.801 × 99 =
20. 20.8 × 9 =
21. 21.145 × 999 =
22. 22.3 × 9 =
23. 23.2 × 9 =
24. 24.4 × 9 =
25. 25.92 × 99 =
26. 26.93 × 99 =
27. 27.4937 × 999 =
28. 28.471 × 99 =
29. 29.3 × 9 =
30. 30.88 × 99 =
31. 31.8 × 9 =
32. 32.523 × 999 =
33. 33.4 × 9 =
34. 34.5 × 9 =
35. 35.157 × 9 =
36. 36.111 × 999 =
37. 37.69 × 99 =
38. 38.57 × 99 =
39. 39.8 × 9 =
40. 40.93 × 99 =

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