Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 149 · 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. 1.1851 × 99 =
2. 2.129 × 9 =
3. 3.111 × 9 =
4. 4.624 × 999 =
5. 5.8 × 9 =
6. 6.633 × 99 =
7. 7.26 × 99 =
8. 8.7 × 9 =
9. 9.197 × 999 =
10. 10.905 × 999 =
11. 11.3 × 9 =
12. 12.49 × 99 =
13. 13.321 × 99 =
14. 14.95 × 99 =
15. 15.134 × 999 =
16. 16.2 × 9 =
17. 17.16281 × 999 =
18. 18.5 × 9 =
19. 19.66 × 99 =
20. 20.21 × 999 =
21. 21.156 × 9 =
22. 22.8 × 9 =
23. 23.714 × 999 =
24. 24.8 × 9 =
25. 25.743 × 999 =
26. 26.7 × 9 =
27. 27.1842 × 99 =
28. 28.95 × 99 =
29. 29.4 × 9 =
30. 30.7 × 9 =
31. 31.981 × 999 =
32. 32.195 × 999 =
33. 33.2373 × 99 =
34. 34.618 × 999 =
35. 35.552 × 999 =
36. 36.248 × 9 =
37. 37.3 × 99 =
38. 38.236 × 999 =
39. 39.3 × 9 =
40. 40.83 × 99 =

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