Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 980 · 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. 1.91 × 99 =
2. 2.11 × 99 =
3. 3.3 × 9 =
4. 4.41 × 99 =
5. 5.2082 × 99 =
6. 6.6 × 9 =
7. 7.3095 × 999 =
8. 8.7 × 9 =
9. 9.28234 × 999 =
10. 10.281 × 999 =
11. 11.2 × 9 =
12. 12.221 × 9 =
13. 13.42 × 99 =
14. 14.25531 × 999 =
15. 15.646 × 99 =
16. 16.131 × 9 =
17. 17.13011 × 999 =
18. 18.554 × 99 =
19. 19.14 × 9 =
20. 20.252 × 999 =
21. 21.89 × 9 =
22. 22.3 × 99 =
23. 23.618 × 999 =
24. 24.2 × 9 =
25. 25.5 × 9 =
26. 26.506 × 999 =
27. 27.1762 × 99 =
28. 28.68 × 99 =
29. 29.982 × 999 =
30. 30.99 × 9 =
31. 31.725 × 999 =
32. 32.575 × 999 =
33. 33.81 × 99 =
34. 34.41 × 99 =
35. 35.261 × 9 =
36. 36.76 × 99 =
37. 37.2359 × 999 =
38. 38.178 × 9 =
39. 39.592 × 999 =
40. 40.439 × 999 =

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