Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 901 · 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. 1.7 × 9 =
2. 2.53 × 99 =
3. 3.13 × 99 =
4. 4.6 × 9 =
5. 5.33 × 99 =
6. 6.1271 × 99 =
7. 7.286 × 999 =
8. 8.1752 × 99 =
9. 9.145 × 999 =
10. 10.14 × 99 =
11. 11.13 × 99 =
12. 12.1166 × 99 =
13. 13.424 × 999 =
14. 14.84 × 99 =
15. 15.711 × 999 =
16. 16.3 × 9 =
17. 17.252 × 9 =
18. 18.785 × 999 =
19. 19.28219 × 999 =
20. 20.2 × 9 =
21. 21.726 × 999 =
22. 22.4 × 9 =
23. 23.4 × 9 =
24. 24.2 × 99 =
25. 25.91 × 99 =
26. 26.4944 × 999 =
27. 27.3 × 9 =
28. 28.9 × 99 =
29. 29.6359 × 999 =
30. 30.683 × 999 =
31. 31.138 × 999 =
32. 32.10231 × 999 =
33. 33.43 × 999 =
34. 34.171 × 9 =
35. 35.4 × 9 =
36. 36.521 × 999 =
37. 37.5 × 9 =
38. 38.449 × 999 =
39. 39.46 × 99 =
40. 40.58 × 99 =

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