Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 702 · 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. 1.4 × 9 =
2. 2.153 × 999 =
3. 3.1088 × 99 =
4. 4.6 × 99 =
5. 5.4 × 9 =
6. 6.6 × 9 =
7. 7.684 × 999 =
8. 8.54 × 99 =
9. 9.51 × 99 =
10. 10.69 × 9 =
11. 11.61 × 99 =
12. 12.32 × 9 =
13. 13.425 × 999 =
14. 14.2 × 9 =
15. 15.2217 × 99 =
16. 16.251 × 9 =
17. 17.918 × 999 =
18. 18.7791 × 999 =
19. 19.74 × 99 =
20. 20.2627 × 99 =
21. 21.74 × 9 =
22. 22.3 × 99 =
23. 23.69 × 99 =
24. 24.95 × 99 =
25. 25.59 × 999 =
26. 26.272 × 999 =
27. 27.656 × 999 =
28. 28.28802 × 999 =
29. 29.95 × 99 =
30. 30.12 × 9 =
31. 31.801 × 999 =
32. 32.626 × 999 =
33. 33.218 × 999 =
34. 34.2582 × 99 =
35. 35.153 × 9 =
36. 36.694 × 99 =
37. 37.7668 × 999 =
38. 38.141 × 9 =
39. 39.5 × 9 =
40. 40.83 × 99 =

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