Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 72 · 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. 1.4 × 9 =
2. 2.645 × 99 =
3. 3.91 × 99 =
4. 4.1803 × 99 =
5. 5.2 × 9 =
6. 6.95 × 999 =
7. 7.8 × 9 =
8. 8.486 × 999 =
9. 9.83 × 99 =
10. 10.73 × 99 =
11. 11.258 × 999 =
12. 12.6 × 9 =
13. 13.2 × 9 =
14. 14.69 × 99 =
15. 15.2801 × 99 =
16. 16.63 × 99 =
17. 17.7 × 9 =
18. 18.46 × 99 =
19. 19.2516 × 99 =
20. 20.8 × 9 =
21. 21.278 × 999 =
22. 22.5 × 9 =
23. 23.99 × 9 =
24. 24.294 × 999 =
25. 25.3 × 99 =
26. 26.5 × 9 =
27. 27.675 × 999 =
28. 28.728 × 999 =
29. 29.582 × 999 =
30. 30.827 × 999 =
31. 31.46 × 99 =
32. 32.187 × 9 =
33. 33.36 × 99 =
34. 34.1143 × 99 =
35. 35.6 × 9 =
36. 36.25 × 99 =
37. 37.22 × 99 =
38. 38.31 × 9 =
39. 39.66 × 99 =
40. 40.19 × 99 =

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