Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 972 · 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. 1.87 × 99 =
2. 2.2 × 9 =
3. 3.41 × 99 =
4. 4.3255 × 999 =
5. 5.39 × 99 =
6. 6.152 × 9 =
7. 7.89 × 99 =
8. 8.5 × 9 =
9. 9.69 × 99 =
10. 10.8 × 9 =
11. 11.128 × 9 =
12. 12.2 × 9 =
13. 13.75 × 99 =
14. 14.35 × 9 =
15. 15.114 × 9 =
16. 16.98 × 99 =
17. 17.943 × 999 =
18. 18.4 × 9 =
19. 19.209 × 9 =
20. 20.209 × 999 =
21. 21.6 × 9 =
22. 22.926 × 999 =
23. 23.7 × 9 =
24. 24.19865 × 999 =
25. 25.5 × 9 =
26. 26.416 × 999 =
27. 27.133 × 9 =
28. 28.33 × 99 =
29. 29.3 × 9 =
30. 30.22 × 99 =
31. 31.78 × 99 =
32. 32.5 × 9 =
33. 33.28 × 99 =
34. 34.12 × 999 =
35. 35.24 × 99 =
36. 36.2 × 9 =
37. 37.234 × 9 =
38. 38.78 × 999 =
39. 39.6 × 9 =
40. 40.24 × 9 =

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