Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 478 · 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. 1.884 × 99 =
2. 2.142 × 9 =
3. 3.81 × 99 =
4. 4.179 × 9 =
5. 5.203 × 9 =
6. 6.218 × 999 =
7. 7.675 × 999 =
8. 8.5 × 9 =
9. 9.358 × 999 =
10. 10.444 × 999 =
11. 11.2711 × 99 =
12. 12.53 × 99 =
13. 13.211 × 9 =
14. 14.99 × 9 =
15. 15.2 × 9 =
16. 16.65 × 99 =
17. 17.31 × 99 =
18. 18.72 × 99 =
19. 19.2 × 9 =
20. 20.28608 × 999 =
21. 21.45 × 99 =
22. 22.1133 × 99 =
23. 23.243 × 999 =
24. 24.72 × 99 =
25. 25.183 × 9 =
26. 26.79 × 99 =
27. 27.4 × 9 =
28. 28.5 × 9 =
29. 29.61 × 99 =
30. 30.2 × 99 =
31. 31.26 × 99 =
32. 32.19117 × 999 =
33. 33.217 × 9 =
34. 34.8 × 9 =
35. 35.6 × 9 =
36. 36.77 × 99 =
37. 37.121 × 999 =
38. 38.3 × 99 =
39. 39.4 × 9 =
40. 40.198 × 9 =

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