Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 167 · 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. 1.9 × 99 =
2. 2.5 × 9 =
3. 3.8 × 9 =
4. 4.292 × 999 =
5. 5.251 × 999 =
6. 6.7 × 9 =
7. 7.3 × 99 =
8. 8.1748 × 99 =
9. 9.61 × 99 =
10. 10.251 × 9 =
11. 11.4 × 9 =
12. 12.161 × 99 =
13. 13.12 × 99 =
14. 14.88 × 99 =
15. 15.4 × 9 =
16. 16.2 × 9 =
17. 17.22521 × 999 =
18. 18.51 × 99 =
19. 19.525 × 999 =
20. 20.4 × 9 =
21. 21.618 × 999 =
22. 22.221 × 999 =
23. 23.6 × 9 =
24. 24.5 × 9 =
25. 25.166 × 999 =
26. 26.2 × 9 =
27. 27.3206 × 999 =
28. 28.1392 × 99 =
29. 29.6 × 9 =
30. 30.255 × 999 =
31. 31.92 × 99 =
32. 32.5 × 9 =
33. 33.2471 × 99 =
34. 34.31 × 99 =
35. 35.145 × 999 =
36. 36.2 × 9 =
37. 37.19 × 99 =
38. 38.329 × 999 =
39. 39.398 × 999 =
40. 40.151 × 9 =

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