Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 749 · 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. 1.2 × 9 =
2. 2.34 × 99 =
3. 3.189 × 999 =
4. 4.84 × 99 =
5. 5.432 × 999 =
6. 6.7 × 999 =
7. 7.62 × 9 =
8. 8.7 × 9 =
9. 9.388 × 99 =
10. 10.24 × 9 =
11. 11.764 × 99 =
12. 12.62 × 99 =
13. 13.2 × 9 =
14. 14.2 × 9 =
15. 15.196 × 9 =
16. 16.21 × 99 =
17. 17.68 × 9 =
18. 18.2587 × 99 =
19. 19.8 × 9 =
20. 20.2285 × 99 =
21. 21.1709 × 99 =
22. 22.21 × 99 =
23. 23.511 × 999 =
24. 24.219 × 999 =
25. 25.2 × 9 =
26. 26.5342 × 999 =
27. 27.869 × 999 =
28. 28.2 × 9 =
29. 29.15235 × 999 =
30. 30.28 × 99 =
31. 31.41 × 99 =
32. 32.5 × 9 =
33. 33.862 × 999 =
34. 34.2958 × 999 =
35. 35.501 × 999 =
36. 36.3 × 9 =
37. 37.55 × 99 =
38. 38.46 × 99 =
39. 39.7 × 9 =
40. 40.7 × 9 =

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