Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 650 · 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. 1.2139 × 99 =
2. 2.5 × 9 =
3. 3.4 × 9 =
4. 4.138 × 9 =
5. 5.24 × 999 =
6. 6.3 × 999 =
7. 7.89 × 99 =
8. 8.44 × 99 =
9. 9.1419 × 99 =
10. 10.91 × 99 =
11. 11.2776 × 99 =
12. 12.6 × 9 =
13. 13.161 × 999 =
14. 14.88 × 999 =
15. 15.245 × 9 =
16. 16.6 × 9 =
17. 17.188 × 999 =
18. 18.23 × 99 =
19. 19.561 × 999 =
20. 20.49 × 99 =
21. 21.22243 × 999 =
22. 22.79 × 9 =
23. 23.2 × 9 =
24. 24.37 × 9 =
25. 25.38 × 99 =
26. 26.234 × 9 =
27. 27.88 × 99 =
28. 28.69 × 99 =
29. 29.269 × 999 =
30. 30.8 × 9 =
31. 31.98 × 99 =
32. 32.652 × 999 =
33. 33.559 × 99 =
34. 34.7 × 9 =
35. 35.11 × 99 =
36. 36.172 × 9 =
37. 37.6 × 9 =
38. 38.2 × 99 =
39. 39.1828 × 99 =
40. 40.61 × 99 =

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