Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 646 · 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. 1.35 × 99 =
2. 2.2939 × 99 =
3. 3.598 × 999 =
4. 4.91 × 99 =
5. 5.6392 × 999 =
6. 6.1494 × 99 =
7. 7.2 × 9 =
8. 8.41 × 999 =
9. 9.4 × 9 =
10. 10.19 × 99 =
11. 11.948 × 999 =
12. 12.1047 × 99 =
13. 13.27 × 99 =
14. 14.19 × 99 =
15. 15.2 × 9 =
16. 16.131 × 9 =
17. 17.74 × 99 =
18. 18.7 × 9 =
19. 19.471 × 999 =
20. 20.15 × 99 =
21. 21.644 × 99 =
22. 22.499 × 999 =
23. 23.3 × 9 =
24. 24.161 × 9 =
25. 25.91 × 99 =
26. 26.6429 × 999 =
27. 27.9 × 99 =
28. 28.3 × 9 =
29. 29.46 × 99 =
30. 30.189 × 999 =
31. 31.6 × 9 =
32. 32.24466 × 999 =
33. 33.127 × 9 =
34. 34.6 × 9 =
35. 35.929 × 999 =
36. 36.91 × 99 =
37. 37.2761 × 99 =
38. 38.2 × 9 =
39. 39.58 × 99 =
40. 40.2432 × 99 =

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