Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 161 · 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. 1.167 × 99 =
2. 2.241 × 9 =
3. 3.2757 × 99 =
4. 4.1791 × 99 =
5. 5.7 × 9 =
6. 6.39 × 999 =
7. 7.26 × 99 =
8. 8.256 × 999 =
9. 9.3317 × 999 =
10. 10.3717 × 999 =
11. 11.8 × 99 =
12. 12.13647 × 999 =
13. 13.601 × 99 =
14. 14.20871 × 999 =
15. 15.168 × 9 =
16. 16.21188 × 999 =
17. 17.8 × 9 =
18. 18.6 × 9 =
19. 19.87 × 99 =
20. 20.75 × 99 =
21. 21.283 × 999 =
22. 22.98 × 99 =
23. 23.6 × 9 =
24. 24.941 × 999 =
25. 25.529 × 999 =
26. 26.24998 × 999 =
27. 27.29 × 999 =
28. 28.7 × 9 =
29. 29.21141 × 999 =
30. 30.155 × 9 =
31. 31.7 × 9 =
32. 32.131 × 9 =
33. 33.667 × 999 =
34. 34.246 × 999 =
35. 35.971 × 999 =
36. 36.2 × 9 =
37. 37.676 × 999 =
38. 38.2758 × 99 =
39. 39.355 × 999 =
40. 40.5 × 9 =

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