1. $\sqrt{1} = 1$
2. $\sqrt{4} = 2$
3. $\sqrt{9} = 3$
4. $\sqrt{16} = 4$
5. $\sqrt{25} = 5$
6. $\sqrt{36} = 6$
7. $\sqrt{49} = 7$
8. $\sqrt{64} = 8$
9. $\sqrt{81} = 9$
10. $\sqrt{100} = 10$
11. $\sqrt{121} = 11$
12. $\sqrt{144} = 12$
13. $\sqrt{169} = 13$
14. $\sqrt{196} = 14$
15. $\sqrt{225} = 15$