Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 642 · 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. 1.97 × 99 =
2. 2.4 × 9 =
3. 3.47 × 99 =
4. 4.671 × 99 =
5. 5.78 × 99 =
6. 6.46 × 99 =
7. 7.2 × 9 =
8. 8.875 × 999 =
9. 9.941 × 999 =
10. 10.23699 × 999 =
11. 11.71 × 99 =
12. 12.3 × 9 =
13. 13.7 × 99 =
14. 14.6 × 9 =
15. 15.8 × 9 =
16. 16.4 × 9 =
17. 17.2 × 9 =
18. 18.96 × 99 =
19. 19.425 × 99 =
20. 20.5754 × 999 =
21. 21.901 × 99 =
22. 22.951 × 99 =
23. 23.54 × 99 =
24. 24.25 × 9 =
25. 25.1546 × 99 =
26. 26.165 × 999 =
27. 27.181 × 999 =
28. 28.51 × 99 =
29. 29.174 × 9 =
30. 30.7046 × 999 =
31. 31.7 × 9 =
32. 32.20578 × 999 =
33. 33.3 × 99 =
34. 34.321 × 999 =
35. 35.7 × 9 =
36. 36.875 × 999 =
37. 37.5 × 9 =
38. 38.68 × 99 =
39. 39.3 × 99 =
40. 40.93 × 9 =

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