Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 360 · 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. 1.815 × 99 =
2. 2.85 × 99 =
3. 3.241 × 999 =
4. 4.2 × 9 =
5. 5.18315 × 999 =
6. 6.143 × 999 =
7. 7.5 × 99 =
8. 8.33 × 9 =
9. 9.233 × 9 =
10. 10.194 × 9 =
11. 11.3 × 99 =
12. 12.4 × 9 =
13. 13.105 × 9 =
14. 14.766 × 999 =
15. 15.79 × 99 =
16. 16.4 × 99 =
17. 17.67 × 99 =
18. 18.15 × 99 =
19. 19.5 × 9 =
20. 20.2078 × 99 =
21. 21.8 × 9 =
22. 22.231 × 9 =
23. 23.442 × 999 =
24. 24.542 × 999 =
25. 25.8 × 9 =
26. 26.965 × 999 =
27. 27.883 × 999 =
28. 28.19 × 99 =
29. 29.3 × 9 =
30. 30.1281 × 99 =
31. 31.5 × 9 =
32. 32.2938 × 99 =
33. 33.86 × 99 =
34. 34.2771 × 99 =
35. 35.6 × 9 =
36. 36.14831 × 999 =
37. 37.5 × 9 =
38. 38.725 × 999 =
39. 39.4 × 9 =
40. 40.746 × 999 =

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