Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 694 · 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. 1.88 × 9 =
2. 2.1066 × 99 =
3. 3.171 × 9 =
4. 4.3 × 9 =
5. 5.5 × 9 =
6. 6.726 × 999 =
7. 7.3 × 9 =
8. 8.9536 × 999 =
9. 9.6 × 9 =
10. 10.239 × 9 =
11. 11.54 × 99 =
12. 12.7 × 9 =
13. 13.16854 × 999 =
14. 14.95 × 99 =
15. 15.6 × 9 =
16. 16.68 × 99 =
17. 17.61 × 99 =
18. 18.27 × 99 =
19. 19.24 × 99 =
20. 20.7 × 9 =
21. 21.82 × 99 =
22. 22.5 × 9 =
23. 23.622 × 999 =
24. 24.3 × 9 =
25. 25.171 × 9 =
26. 26.28 × 99 =
27. 27.19313 × 999 =
28. 28.92 × 9 =
29. 29.4 × 99 =
30. 30.222 × 9 =
31. 31.10655 × 999 =
32. 32.6 × 9 =
33. 33.854 × 999 =
34. 34.279 × 999 =
35. 35.98 × 99 =
36. 36.8 × 99 =
37. 37.1171 × 99 =
38. 38.15747 × 999 =
39. 39.17781 × 999 =
40. 40.4 × 9 =

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