Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 364 · 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. 1.2148 × 99 =
2. 2.5 × 9 =
3. 3.8 × 9 =
4. 4.3 × 9 =
5. 5.486 × 999 =
6. 6.5 × 9 =
7. 7.504 × 999 =
8. 8.69 × 99 =
9. 9.357 × 999 =
10. 10.78 × 99 =
11. 11.7 × 9 =
12. 12.151 × 9 =
13. 13.361 × 999 =
14. 14.117 × 999 =
15. 15.935 × 999 =
16. 16.45 × 999 =
17. 17.76 × 9 =
18. 18.79 × 99 =
19. 19.205 × 9 =
20. 20.59 × 99 =
21. 21.8 × 9 =
22. 22.63 × 99 =
23. 23.62 × 9 =
24. 24.131 × 999 =
25. 25.91 × 99 =
26. 26.131 × 999 =
27. 27.59 × 99 =
28. 28.88 × 999 =
29. 29.8 × 9 =
30. 30.23 × 99 =
31. 31.7 × 99 =
32. 32.831 × 999 =
33. 33.1159 × 99 =
34. 34.25229 × 999 =
35. 35.4 × 9 =
36. 36.28 × 99 =
37. 37.21828 × 999 =
38. 38.19 × 99 =
39. 39.2771 × 99 =
40. 40.253 × 999 =

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