Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 647 · 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. 1.801 × 99 =
2. 2.2 × 9 =
3. 3.6 × 9 =
4. 4.58 × 99 =
5. 5.69 × 99 =
6. 6.2 × 9 =
7. 7.3 × 9 =
8. 8.62 × 99 =
9. 9.349 × 99 =
10. 10.8 × 9 =
11. 11.4 × 9 =
12. 12.6 × 9 =
13. 13.8 × 9 =
14. 14.84 × 99 =
15. 15.4 × 9 =
16. 16.48 × 99 =
17. 17.45 × 9 =
18. 18.8 × 9 =
19. 19.7 × 9 =
20. 20.81 × 99 =
21. 21.18 × 99 =
22. 22.2 × 9 =
23. 23.2196 × 99 =
24. 24.242 × 999 =
25. 25.3 × 9 =
26. 26.7 × 9 =
27. 27.2 × 9 =
28. 28.9709 × 999 =
29. 29.66 × 999 =
30. 30.28 × 99 =
31. 31.4 × 9 =
32. 32.1716 × 99 =
33. 33.2759 × 99 =
34. 34.22 × 99 =
35. 35.5 × 9 =
36. 36.8 × 99 =
37. 37.657 × 999 =
38. 38.56 × 99 =
39. 39.31 × 99 =
40. 40.781 × 999 =

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