Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 454 · 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. 1.37 × 99 =
2. 2.668 × 999 =
3. 3.4 × 9 =
4. 4.2 × 9 =
5. 5.657 × 99 =
6. 6.2 × 9 =
7. 7.196 × 9 =
8. 8.16 × 99 =
9. 9.1318 × 99 =
10. 10.39 × 99 =
11. 11.2381 × 99 =
12. 12.923 × 999 =
13. 13.7 × 9 =
14. 14.2 × 9 =
15. 15.274 × 999 =
16. 16.4 × 9 =
17. 17.31 × 99 =
18. 18.633 × 999 =
19. 19.808 × 999 =
20. 20.7 × 9 =
21. 21.7 × 9 =
22. 22.6 × 99 =
23. 23.68 × 99 =
24. 24.573 × 99 =
25. 25.1992 × 99 =
26. 26.491 × 999 =
27. 27.5 × 999 =
28. 28.123 × 999 =
29. 29.1618 × 99 =
30. 30.44 × 99 =
31. 31.88 × 99 =
32. 32.171 × 9 =
33. 33.5 × 9 =
34. 34.2 × 99 =
35. 35.2425 × 99 =
36. 36.6 × 9 =
37. 37.1945 × 99 =
38. 38.5 × 99 =
39. 39.66 × 99 =
40. 40.577 × 99 =

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