Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 133 · 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. 1.12985 × 999 =
2. 2.31 × 9 =
3. 3.13341 × 999 =
4. 4.73 × 9 =
5. 5.4 × 9 =
6. 6.7 × 9 =
7. 7.2 × 9 =
8. 8.2 × 9 =
9. 9.126 × 99 =
10. 10.51 × 99 =
11. 11.538 × 999 =
12. 12.432 × 999 =
13. 13.3 × 99 =
14. 14.7 × 9 =
15. 15.8727 × 999 =
16. 16.526 × 999 =
17. 17.2131 × 99 =
18. 18.2 × 99 =
19. 19.43 × 99 =
20. 20.726 × 999 =
21. 21.6 × 9 =
22. 22.1049 × 999 =
23. 23.13622 × 999 =
24. 24.7 × 9 =
25. 25.712 × 999 =
26. 26.1602 × 99 =
27. 27.923 × 999 =
28. 28.129 × 9 =
29. 29.252 × 999 =
30. 30.17 × 99 =
31. 31.58 × 99 =
32. 32.3 × 9 =
33. 33.154 × 9 =
34. 34.53 × 9 =
35. 35.2 × 9 =
36. 36.3 × 9 =
37. 37.144 × 999 =
38. 38.735 × 999 =
39. 39.1109 × 999 =
40. 40.421 × 999 =

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