Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 143 · 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. 1.81 × 9 =
2. 2.7 × 9 =
3. 3.3 × 9 =
4. 4.8 × 9 =
5. 5.71 × 9 =
6. 6.3 × 9 =
7. 7.249 × 999 =
8. 8.289 × 999 =
9. 9.1344 × 99 =
10. 10.16 × 99 =
11. 11.235 × 9 =
12. 12.41 × 99 =
13. 13.161 × 999 =
14. 14.699 × 999 =
15. 15.7 × 9 =
16. 16.21011 × 999 =
17. 17.6 × 9 =
18. 18.19964 × 999 =
19. 19.17 × 99 =
20. 20.27532 × 999 =
21. 21.485 × 999 =
22. 22.5 × 9 =
23. 23.1502 × 99 =
24. 24.77 × 99 =
25. 25.6619 × 999 =
26. 26.2633 × 99 =
27. 27.3 × 9 =
28. 28.10371 × 999 =
29. 29.691 × 99 =
30. 30.6 × 9 =
31. 31.31 × 9 =
32. 32.488 × 999 =
33. 33.2 × 9 =
34. 34.3 × 9 =
35. 35.1223 × 99 =
36. 36.822 × 999 =
37. 37.2 × 9 =
38. 38.9 × 999 =
39. 39.7 × 9 =
40. 40.97 × 99 =

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