Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 644 · 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. 1.1746 × 99 =
2. 2.195 × 999 =
3. 3.7 × 9 =
4. 4.2852 × 99 =
5. 5.7 × 9 =
6. 6.99 × 9 =
7. 7.5 × 9 =
8. 8.47 × 9 =
9. 9.41 × 99 =
10. 10.463 × 999 =
11. 11.6 × 9 =
12. 12.85 × 9 =
13. 13.25 × 99 =
14. 14.2796 × 99 =
15. 15.17224 × 999 =
16. 16.8 × 9 =
17. 17.837 × 999 =
18. 18.84 × 99 =
19. 19.44 × 99 =
20. 20.6 × 9 =
21. 21.72 × 99 =
22. 22.6 × 9 =
23. 23.6 × 9 =
24. 24.16 × 9 =
25. 25.4 × 99 =
26. 26.4 × 9 =
27. 27.44 × 99 =
28. 28.301 × 999 =
29. 29.286 × 999 =
30. 30.91 × 99 =
31. 31.271 × 99 =
32. 32.7 × 99 =
33. 33.191 × 9 =
34. 34.48 × 99 =
35. 35.7 × 9 =
36. 36.176 × 9 =
37. 37.1149 × 99 =
38. 38.209 × 9 =
39. 39.726 × 999 =
40. 40.8 × 9 =

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