What is the value of $$5^{4}+5^{4}+5^{4}+5^{4}+5^{4}$$? 
Overseas Competition->Knowledge Point->Calculation Modules->Power->Computing Powers
$$5^{1}\cdot5^{4}=5^{1+4}=5^{5}$$,  \uline{Teacher should introduce the formula of $$a^{m}a^{n}=a^{m+n}$$}. 