Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 319 · 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. 1.21 × 99 =
2. 2.886 × 999 =
3. 3.42 × 99 =
4. 4.36 × 99 =
5. 5.5 × 9 =
6. 6.8 × 99 =
7. 7.169 × 9 =
8. 8.213 × 999 =
9. 9.41 × 9 =
10. 10.8 × 9 =
11. 11.806 × 999 =
12. 12.699 × 999 =
13. 13.762 × 999 =
14. 14.2873 × 99 =
15. 15.56 × 99 =
16. 16.479 × 99 =
17. 17.951 × 999 =
18. 18.16 × 99 =
19. 19.8 × 9 =
20. 20.12592 × 999 =
21. 21.33 × 99 =
22. 22.4 × 9 =
23. 23.38 × 999 =
24. 24.253 × 999 =
25. 25.939 × 99 =
26. 26.84 × 99 =
27. 27.2366 × 99 =
28. 28.88 × 99 =
29. 29.14082 × 999 =
30. 30.71 × 99 =
31. 31.82 × 99 =
32. 32.338 × 999 =
33. 33.24 × 9 =
34. 34.885 × 999 =
35. 35.7 × 9 =
36. 36.822 × 999 =
37. 37.625 × 999 =
38. 38.837 × 99 =
39. 39.454 × 999 =
40. 40.5 × 9 =

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