Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 449 · 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. 1.6 × 9 =
2. 2.1771 × 99 =
3. 3.4 × 9 =
4. 4.58 × 9 =
5. 5.171 × 999 =
6. 6.83 × 99 =
7. 7.55 × 99 =
8. 8.48 × 99 =
9. 9.8 × 999 =
10. 10.35 × 99 =
11. 11.214 × 9 =
12. 12.5087 × 999 =
13. 13.63 × 9 =
14. 14.11 × 99 =
15. 15.63 × 9 =
16. 16.551 × 999 =
17. 17.36 × 99 =
18. 18.1797 × 99 =
19. 19.198 × 999 =
20. 20.262 × 999 =
21. 21.2901 × 999 =
22. 22.378 × 99 =
23. 23.7 × 99 =
24. 24.83 × 99 =
25. 25.259 × 999 =
26. 26.254 × 9 =
27. 27.21561 × 999 =
28. 28.74 × 99 =
29. 29.3 × 9 =
30. 30.15171 × 999 =
31. 31.467 × 999 =
32. 32.5 × 9 =
33. 33.7 × 9 =
34. 34.2 × 9 =
35. 35.471 × 999 =
36. 36.8 × 9 =
37. 37.532 × 999 =
38. 38.71 × 9 =
39. 39.47 × 99 =
40. 40.1174 × 99 =

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