Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 602 · 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. 1.2806 × 99 =
2. 2.23951 × 999 =
3. 3.17 × 9 =
4. 4.23 × 99 =
5. 5.253 × 9 =
6. 6.8 × 9 =
7. 7.607 × 999 =
8. 8.874 × 999 =
9. 9.107 × 9 =
10. 10.74 × 99 =
11. 11.821 × 999 =
12. 12.261 × 999 =
13. 13.79 × 99 =
14. 14.76 × 999 =
15. 15.3 × 9 =
16. 16.4 × 9 =
17. 17.135 × 9 =
18. 18.5 × 9 =
19. 19.72 × 99 =
20. 20.7 × 99 =
21. 21.793 × 999 =
22. 22.15 × 999 =
23. 23.2 × 9 =
24. 24.6 × 9 =
25. 25.97 × 999 =
26. 26.763 × 999 =
27. 27.599 × 999 =
28. 28.14 × 99 =
29. 29.10503 × 999 =
30. 30.779 × 999 =
31. 31.25 × 99 =
32. 32.7 × 9 =
33. 33.241 × 9 =
34. 34.8 × 9 =
35. 35.2849 × 999 =
36. 36.4 × 99 =
37. 37.66 × 99 =
38. 38.25829 × 999 =
39. 39.1499 × 999 =
40. 40.424 × 999 =

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