Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 244 · 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. 1.7 × 9 =
2. 2.4 × 9 =
3. 3.16 × 99 =
4. 4.1131 × 99 =
5. 5.459 × 999 =
6. 6.2 × 9 =
7. 7.33 × 99 =
8. 8.166 × 999 =
9. 9.2 × 9 =
10. 10.129 × 99 =
11. 11.269 × 9 =
12. 12.8 × 9 =
13. 13.1707 × 99 =
14. 14.882 × 999 =
15. 15.1812 × 99 =
16. 16.124 × 9 =
17. 17.54 × 99 =
18. 18.2 × 9 =
19. 19.31 × 9 =
20. 20.411 × 999 =
21. 21.3 × 9 =
22. 22.2 × 9 =
23. 23.27 × 99 =
24. 24.411 × 999 =
25. 25.3 × 9 =
26. 26.15779 × 999 =
27. 27.72 × 99 =
28. 28.235 × 9 =
29. 29.2779 × 99 =
30. 30.862 × 999 =
31. 31.5 × 9 =
32. 32.18531 × 999 =
33. 33.9 × 99 =
34. 34.782 × 999 =
35. 35.644 × 999 =
36. 36.65 × 99 =
37. 37.72 × 99 =
38. 38.5 × 9 =
39. 39.44 × 999 =
40. 40.26 × 99 =

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