Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 720 · 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. 1.63 × 9 =
2. 2.743 × 999 =
3. 3.2827 × 99 =
4. 4.2784 × 99 =
5. 5.24 × 9 =
6. 6.1241 × 999 =
7. 7.888 × 999 =
8. 8.71 × 99 =
9. 9.66 × 99 =
10. 10.325 × 99 =
11. 11.116 × 999 =
12. 12.28 × 99 =
13. 13.18513 × 999 =
14. 14.4 × 9 =
15. 15.1643 × 99 =
16. 16.11 × 99 =
17. 17.8 × 99 =
18. 18.42 × 99 =
19. 19.1601 × 999 =
20. 20.4 × 9 =
21. 21.97 × 999 =
22. 22.637 × 999 =
23. 23.166 × 9 =
24. 24.5 × 99 =
25. 25.5 × 9 =
26. 26.3 × 9 =
27. 27.881 × 999 =
28. 28.5 × 9 =
29. 29.119 × 999 =
30. 30.5 × 9 =
31. 31.436 × 99 =
32. 32.28 × 99 =
33. 33.1068 × 99 =
34. 34.1075 × 99 =
35. 35.458 × 999 =
36. 36.161 × 999 =
37. 37.1472 × 99 =
38. 38.784 × 999 =
39. 39.3 × 9 =
40. 40.125 × 9 =

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