Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 522 · 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. 1.1213 × 99 =
2. 2.7 × 9 =
3. 3.164 × 9 =
4. 4.9 × 99 =
5. 5.94 × 99 =
6. 6.2 × 9 =
7. 7.821 × 999 =
8. 8.61 × 99 =
9. 9.2778 × 99 =
10. 10.6 × 9 =
11. 11.61 × 9 =
12. 12.1381 × 99 =
13. 13.5 × 9 =
14. 14.171 × 9 =
15. 15.7 × 9 =
16. 16.69 × 9 =
17. 17.987 × 99 =
18. 18.777 × 999 =
19. 19.7 × 9 =
20. 20.7 × 9 =
21. 21.914 × 999 =
22. 22.259 × 999 =
23. 23.17 × 99 =
24. 24.7 × 9 =
25. 25.97 × 999 =
26. 26.55 × 99 =
27. 27.955 × 999 =
28. 28.84 × 999 =
29. 29.11 × 99 =
30. 30.3 × 9 =
31. 31.48 × 99 =
32. 32.3 × 9 =
33. 33.4 × 9 =
34. 34.2 × 9 =
35. 35.8 × 9 =
36. 36.5 × 9 =
37. 37.7 × 9 =
38. 38.817 × 999 =
39. 39.177 × 99 =
40. 40.2 × 9 =

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