Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 40 · 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. 1.8 × 9 =
2. 2.391 × 999 =
3. 3.31 × 99 =
4. 4.3248 × 999 =
5. 5.3 × 9 =
6. 6.3 × 9 =
7. 7.3 × 9 =
8. 8.349 × 999 =
9. 9.16 × 99 =
10. 10.4 × 9 =
11. 11.54 × 99 =
12. 12.47 × 99 =
13. 13.694 × 999 =
14. 14.502 × 999 =
15. 15.134 × 999 =
16. 16.786 × 999 =
17. 17.99 × 9 =
18. 18.3 × 9 =
19. 19.11 × 99 =
20. 20.3 × 9 =
21. 21.706 × 999 =
22. 22.55 × 99 =
23. 23.17 × 9 =
24. 24.52 × 99 =
25. 25.3 × 9 =
26. 26.54 × 99 =
27. 27.8 × 9 =
28. 28.2 × 9 =
29. 29.6 × 9 =
30. 30.21 × 99 =
31. 31.2877 × 99 =
32. 32.71 × 99 =
33. 33.824 × 99 =
34. 34.89 × 99 =
35. 35.45 × 9 =
36. 36.977 × 999 =
37. 37.3 × 9 =
38. 38.2428 × 99 =
39. 39.5 × 9 =
40. 40.579 × 999 =

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