Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 672 · 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. 1.98 × 99 =
2. 2.3 × 9 =
3. 3.23 × 9 =
4. 4.521 × 999 =
5. 5.21 × 99 =
6. 6.175 × 999 =
7. 7.14 × 99 =
8. 8.39 × 99 =
9. 9.3 × 9 =
10. 10.93 × 99 =
11. 11.435 × 999 =
12. 12.7483 × 999 =
13. 13.4 × 9 =
14. 14.184 × 999 =
15. 15.87 × 99 =
16. 16.6 × 9 =
17. 17.853 × 999 =
18. 18.121 × 999 =
19. 19.429 × 999 =
20. 20.9 × 99 =
21. 21.78 × 99 =
22. 22.2412 × 99 =
23. 23.563 × 99 =
24. 24.75 × 99 =
25. 25.3855 × 999 =
26. 26.15208 × 999 =
27. 27.341 × 999 =
28. 28.137 × 9 =
29. 29.891 × 999 =
30. 30.412 × 999 =
31. 31.6 × 9 =
32. 32.86 × 99 =
33. 33.503 × 999 =
34. 34.71 × 99 =
35. 35.97 × 99 =
36. 36.613 × 999 =
37. 37.403 × 99 =
38. 38.12 × 99 =
39. 39.33 × 99 =
40. 40.103 × 9 =

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