Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 5 · 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. 1.2618 × 99 =
2. 2.2 × 99 =
3. 3.2 × 9 =
4. 4.78 × 99 =
5. 5.3 × 9 =
6. 6.231 × 9 =
7. 7.8 × 99 =
8. 8.7 × 9 =
9. 9.5 × 9 =
10. 10.907 × 99 =
11. 11.741 × 999 =
12. 12.271 × 999 =
13. 13.42 × 99 =
14. 14.31 × 99 =
15. 15.3 × 9 =
16. 16.23 × 99 =
17. 17.258 × 999 =
18. 18.271 × 999 =
19. 19.3 × 9 =
20. 20.76 × 99 =
21. 21.12 × 99 =
22. 22.2 × 9 =
23. 23.8 × 9 =
24. 24.1694 × 99 =
25. 25.2 × 9 =
26. 26.28101 × 999 =
27. 27.5041 × 999 =
28. 28.194 × 9 =
29. 29.149 × 9 =
30. 30.911 × 999 =
31. 31.8 × 9 =
32. 32.3 × 9 =
33. 33.651 × 999 =
34. 34.55 × 99 =
35. 35.10371 × 999 =
36. 36.12 × 99 =
37. 37.145 × 9 =
38. 38.2 × 9 =
39. 39.71 × 99 =
40. 40.5 × 9 =

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