Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 867 · 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. 1.5 × 9 =
2. 2.497 × 999 =
3. 3.7 × 9 =
4. 4.52 × 99 =
5. 5.20027 × 999 =
6. 6.63 × 99 =
7. 7.44 × 9 =
8. 8.76 × 99 =
9. 9.47 × 99 =
10. 10.45 × 99 =
11. 11.7 × 99 =
12. 12.3 × 9 =
13. 13.89 × 99 =
14. 14.3 × 9 =
15. 15.36 × 99 =
16. 16.14 × 99 =
17. 17.119 × 9 =
18. 18.7 × 99 =
19. 19.111 × 9 =
20. 20.828 × 999 =
21. 21.6 × 9 =
22. 22.7 × 9 =
23. 23.2418 × 99 =
24. 24.28 × 99 =
25. 25.23458 × 999 =
26. 26.23123 × 999 =
27. 27.21459 × 999 =
28. 28.797 × 999 =
29. 29.558 × 999 =
30. 30.977 × 999 =
31. 31.771 × 999 =
32. 32.639 × 999 =
33. 33.36 × 99 =
34. 34.17 × 99 =
35. 35.77 × 99 =
36. 36.131 × 999 =
37. 37.2002 × 99 =
38. 38.5 × 9 =
39. 39.2 × 9 =
40. 40.16901 × 999 =

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