Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 671 · 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. 1.39 × 99 =
2. 2.4 × 9 =
3. 3.218 × 99 =
4. 4.78 × 99 =
5. 5.203 × 999 =
6. 6.242 × 9 =
7. 7.1033 × 99 =
8. 8.5 × 9 =
9. 9.45 × 99 =
10. 10.92 × 99 =
11. 11.9 × 99 =
12. 12.17794 × 999 =
13. 13.19433 × 999 =
14. 14.10512 × 999 =
15. 15.5 × 9 =
16. 16.2 × 9 =
17. 17.97 × 999 =
18. 18.5 × 9 =
19. 19.65 × 99 =
20. 20.85 × 99 =
21. 21.242 × 999 =
22. 22.5 × 9 =
23. 23.4 × 9 =
24. 24.5 × 9 =
25. 25.461 × 999 =
26. 26.91 × 99 =
27. 27.27 × 99 =
28. 28.3 × 9 =
29. 29.6 × 9 =
30. 30.21 × 9 =
31. 31.3 × 9 =
32. 32.5 × 9 =
33. 33.71 × 99 =
34. 34.12 × 9 =
35. 35.58 × 99 =
36. 36.41 × 99 =
37. 37.9 × 99 =
38. 38.6 × 99 =
39. 39.396 × 999 =
40. 40.316 × 999 =

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