Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 171 · 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. 1.23 × 99 =
2. 2.13847 × 999 =
3. 3.521 × 999 =
4. 4.2 × 9 =
5. 5.143 × 9 =
6. 6.995 × 999 =
7. 7.6 × 9 =
8. 8.3 × 9 =
9. 9.73 × 99 =
10. 10.86 × 99 =
11. 11.93 × 99 =
12. 12.373 × 999 =
13. 13.28 × 99 =
14. 14.484 × 99 =
15. 15.56 × 99 =
16. 16.45 × 9 =
17. 17.1926 × 99 =
18. 18.2 × 9 =
19. 19.1352 × 99 =
20. 20.2331 × 99 =
21. 21.2187 × 99 =
22. 22.31 × 99 =
23. 23.58 × 99 =
24. 24.255 × 9 =
25. 25.92 × 99 =
26. 26.11 × 99 =
27. 27.119 × 9 =
28. 28.196 × 999 =
29. 29.5 × 9 =
30. 30.85 × 99 =
31. 31.38 × 999 =
32. 32.207 × 99 =
33. 33.5 × 9 =
34. 34.5 × 99 =
35. 35.183 × 9 =
36. 36.8 × 9 =
37. 37.109 × 999 =
38. 38.3 × 9 =
39. 39.7 × 9 =
40. 40.156 × 999 =

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