Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 918 · 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. 1.173 × 999 =
2. 2.172 × 999 =
3. 3.578 × 999 =
4. 4.32 × 99 =
5. 5.23 × 99 =
6. 6.3 × 9 =
7. 7.58 × 99 =
8. 8.235 × 9 =
9. 9.5 × 9 =
10. 10.2053 × 99 =
11. 11.83 × 99 =
12. 12.2 × 9 =
13. 13.89 × 9 =
14. 14.316 × 999 =
15. 15.84 × 999 =
16. 16.58 × 99 =
17. 17.545 × 999 =
18. 18.41 × 99 =
19. 19.952 × 999 =
20. 20.6 × 9 =
21. 21.987 × 999 =
22. 22.97 × 99 =
23. 23.2551 × 99 =
24. 24.96 × 99 =
25. 25.12 × 99 =
26. 26.65 × 99 =
27. 27.14943 × 999 =
28. 28.48 × 99 =
29. 29.232 × 999 =
30. 30.21 × 99 =
31. 31.271 × 9 =
32. 32.38 × 99 =
33. 33.7 × 9 =
34. 34.2 × 9 =
35. 35.82 × 99 =
36. 36.4321 × 999 =
37. 37.5 × 9 =
38. 38.3 × 9 =
39. 39.26 × 9 =
40. 40.2153 × 99 =

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