Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 664 · 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. 1.77 × 99 =
2. 2.5 × 99 =
3. 3.77 × 99 =
4. 4.38 × 99 =
5. 5.85 × 999 =
6. 6.2 × 9 =
7. 7.6 × 9 =
8. 8.17583 × 999 =
9. 9.97 × 99 =
10. 10.3 × 9 =
11. 11.441 × 999 =
12. 12.8 × 9 =
13. 13.12146 × 999 =
14. 14.211 × 999 =
15. 15.186 × 999 =
16. 16.41 × 99 =
17. 17.3 × 9 =
18. 18.261 × 9 =
19. 19.8089 × 999 =
20. 20.17 × 99 =
21. 21.2 × 99 =
22. 22.113 × 9 =
23. 23.4 × 9 =
24. 24.268 × 9 =
25. 25.533 × 999 =
26. 26.6 × 99 =
27. 27.14446 × 999 =
28. 28.2337 × 99 =
29. 29.958 × 999 =
30. 30.22 × 99 =
31. 31.22 × 99 =
32. 32.7 × 9 =
33. 33.737 × 999 =
34. 34.231 × 999 =
35. 35.5 × 9 =
36. 36.21492 × 999 =
37. 37.8 × 9 =
38. 38.112 × 9 =
39. 39.12 × 99 =
40. 40.2636 × 99 =

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