Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 301 · 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. 1.8 × 9 =
2. 2.79 × 9 =
3. 3.223 × 999 =
4. 4.4 × 9 =
5. 5.819 × 999 =
6. 6.2543 × 99 =
7. 7.57 × 999 =
8. 8.76 × 99 =
9. 9.7 × 9 =
10. 10.27216 × 999 =
11. 11.7 × 99 =
12. 12.31 × 99 =
13. 13.8 × 9 =
14. 14.14557 × 999 =
15. 15.19323 × 999 =
16. 16.38 × 99 =
17. 17.8 × 9 =
18. 18.3 × 9 =
19. 19.4 × 9 =
20. 20.55 × 999 =
21. 21.147 × 9 =
22. 22.85 × 99 =
23. 23.19 × 999 =
24. 24.3 × 99 =
25. 25.58 × 99 =
26. 26.17 × 9 =
27. 27.25 × 99 =
28. 28.7 × 9 =
29. 29.64 × 99 =
30. 30.26 × 99 =
31. 31.4 × 9 =
32. 32.67 × 99 =
33. 33.34 × 99 =
34. 34.57 × 99 =
35. 35.2091 × 99 =
36. 36.48 × 99 =
37. 37.836 × 99 =
38. 38.74 × 99 =
39. 39.18 × 9 =
40. 40.71 × 99 =

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