Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 394 · 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. 1.57 × 9 =
2. 2.5221 × 999 =
3. 3.928 × 999 =
4. 4.943 × 999 =
5. 5.9623 × 999 =
6. 6.109 × 9 =
7. 7.6 × 9 =
8. 8.2912 × 99 =
9. 9.2 × 9 =
10. 10.6822 × 999 =
11. 11.991 × 999 =
12. 12.33 × 99 =
13. 13.215 × 999 =
14. 14.62 × 999 =
15. 15.2449 × 99 =
16. 16.5 × 9 =
17. 17.6 × 9 =
18. 18.41 × 99 =
19. 19.44 × 999 =
20. 20.602 × 999 =
21. 21.49 × 99 =
22. 22.2 × 9 =
23. 23.138 × 9 =
24. 24.1813 × 99 =
25. 25.7 × 9 =
26. 26.74 × 99 =
27. 27.4 × 9 =
28. 28.7 × 9 =
29. 29.8 × 9 =
30. 30.25201 × 999 =
31. 31.2381 × 99 =
32. 32.24 × 9 =
33. 33.445 × 999 =
34. 34.4 × 9 =
35. 35.254 × 9 =
36. 36.69 × 99 =
37. 37.65 × 999 =
38. 38.38 × 999 =
39. 39.34 × 99 =
40. 40.724 × 999 =

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