Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 584 · 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. 1.6 × 9 =
2. 2.2 × 9 =
3. 3.54 × 999 =
4. 4.131 × 9 =
5. 5.358 × 999 =
6. 6.361 × 99 =
7. 7.2767 × 999 =
8. 8.606 × 999 =
9. 9.2 × 9 =
10. 10.17731 × 999 =
11. 11.6 × 9 =
12. 12.16 × 99 =
13. 13.2324 × 99 =
14. 14.2829 × 99 =
15. 15.255 × 999 =
16. 16.76 × 99 =
17. 17.21 × 999 =
18. 18.931 × 999 =
19. 19.251 × 999 =
20. 20.691 × 999 =
21. 21.433 × 99 =
22. 22.459 × 999 =
23. 23.382 × 999 =
24. 24.28464 × 999 =
25. 25.46 × 99 =
26. 26.37 × 99 =
27. 27.71 × 99 =
28. 28.1989 × 99 =
29. 29.68 × 99 =
30. 30.1497 × 99 =
31. 31.17818 × 999 =
32. 32.45 × 999 =
33. 33.2 × 9 =
34. 34.979 × 999 =
35. 35.34 × 99 =
36. 36.3 × 9 =
37. 37.3 × 99 =
38. 38.98 × 99 =
39. 39.3 × 9 =
40. 40.5 × 9 =

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