Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 27 · 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. 1.67 × 99 =
2. 2.3 × 9 =
3. 3.191 × 9 =
4. 4.2182 × 99 =
5. 5.6 × 9 =
6. 6.3 × 9 =
7. 7.224 × 9 =
8. 8.31 × 99 =
9. 9.3 × 9 =
10. 10.8432 × 999 =
11. 11.704 × 999 =
12. 12.81 × 99 =
13. 13.7 × 9 =
14. 14.15451 × 999 =
15. 15.1238 × 99 =
16. 16.191 × 999 =
17. 17.7 × 9 =
18. 18.4 × 9 =
19. 19.3 × 9 =
20. 20.128 × 999 =
21. 21.202 × 9 =
22. 22.618 × 999 =
23. 23.495 × 999 =
24. 24.737 × 999 =
25. 25.2191 × 99 =
26. 26.24791 × 999 =
27. 27.56 × 99 =
28. 28.75 × 99 =
29. 29.1443 × 99 =
30. 30.161 × 99 =
31. 31.847 × 999 =
32. 32.4 × 9 =
33. 33.2 × 9 =
34. 34.74 × 99 =
35. 35.92 × 99 =
36. 36.4 × 999 =
37. 37.23017 × 999 =
38. 38.98 × 99 =
39. 39.3 × 9 =
40. 40.333 × 999 =

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