Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 75 · 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. 1.137 × 9 =
2. 2.21 × 99 =
3. 3.65 × 99 =
4. 4.571 × 999 =
5. 5.84 × 9 =
6. 6.6 × 9 =
7. 7.148 × 9 =
8. 8.23 × 9 =
9. 9.2 × 9 =
10. 10.858 × 999 =
11. 11.79 × 99 =
12. 12.28 × 999 =
13. 13.549 × 99 =
14. 14.3 × 9 =
15. 15.69 × 9 =
16. 16.96 × 99 =
17. 17.5 × 9 =
18. 18.196 × 9 =
19. 19.7 × 9 =
20. 20.22 × 99 =
21. 21.285 × 999 =
22. 22.1182 × 99 =
23. 23.241 × 9 =
24. 24.1603 × 99 =
25. 25.656 × 999 =
26. 26.2556 × 99 =
27. 27.8 × 9 =
28. 28.11 × 99 =
29. 29.23 × 99 =
30. 30.1563 × 99 =
31. 31.74 × 99 =
32. 32.73 × 99 =
33. 33.4 × 9 =
34. 34.4 × 9 =
35. 35.6 × 9 =
36. 36.49 × 99 =
37. 37.395 × 999 =
38. 38.7 × 9 =
39. 39.4 × 9 =
40. 40.608 × 999 =

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