Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 670 · 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. 2.31 × 99 =
3. 3.28 × 9 =
4. 4.3 × 9 =
5. 5.802 × 999 =
6. 6.21453 × 999 =
7. 7.977 × 999 =
8. 8.2709 × 99 =
9. 9.162 × 9 =
10. 10.781 × 99 =
11. 11.801 × 99 =
12. 12.5 × 9 =
13. 13.69 × 99 =
14. 14.878 × 999 =
15. 15.97 × 99 =
16. 16.54 × 99 =
17. 17.191 × 999 =
18. 18.941 × 99 =
19. 19.93 × 99 =
20. 20.1495 × 99 =
21. 21.5 × 9 =
22. 22.6281 × 999 =
23. 23.311 × 99 =
24. 24.67 × 99 =
25. 25.4 × 9 =
26. 26.11 × 99 =
27. 27.63 × 99 =
28. 28.36 × 99 =
29. 29.617 × 99 =
30. 30.241 × 9 =
31. 31.8 × 9 =
32. 32.45 × 99 =
33. 33.4937 × 999 =
34. 34.2533 × 99 =
35. 35.86 × 9 =
36. 36.6 × 9 =
37. 37.951 × 999 =
38. 38.724 × 999 =
39. 39.4 × 9 =
40. 40.991 × 999 =

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