Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 855 · 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. 1.71 × 99 =
2. 2.35 × 9 =
3. 3.158 × 9 =
4. 4.311 × 99 =
5. 5.7 × 9 =
6. 6.1409 × 99 =
7. 7.16 × 99 =
8. 8.6 × 9 =
9. 9.15373 × 999 =
10. 10.2926 × 99 =
11. 11.684 × 999 =
12. 12.656 × 999 =
13. 13.91 × 99 =
14. 14.41 × 99 =
15. 15.83 × 99 =
16. 16.209 × 9 =
17. 17.95 × 99 =
18. 18.8 × 9 =
19. 19.3 × 9 =
20. 20.25 × 99 =
21. 21.877 × 999 =
22. 22.2857 × 999 =
23. 23.94 × 99 =
24. 24.719 × 99 =
25. 25.11 × 999 =
26. 26.4 × 9 =
27. 27.813 × 999 =
28. 28.559 × 99 =
29. 29.32 × 99 =
30. 30.34 × 99 =
31. 31.31 × 99 =
32. 32.2727 × 99 =
33. 33.72 × 99 =
34. 34.95 × 99 =
35. 35.91 × 99 =
36. 36.22 × 99 =
37. 37.1628 × 99 =
38. 38.2445 × 99 =
39. 39.4 × 9 =
40. 40.8 × 9 =

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