diff --git a/others/fibonacci_fast.cpp b/math/fibonacci_fast.cpp
similarity index 100%
rename from others/fibonacci_fast.cpp
rename to math/fibonacci_fast.cpp
diff --git a/others/fibonacci_large.cpp b/math/fibonacci_large.cpp
similarity index 100%
rename from others/fibonacci_large.cpp
rename to math/fibonacci_large.cpp
diff --git a/others/large_factorial.cpp b/math/large_factorial.cpp
similarity index 100%
rename from others/large_factorial.cpp
rename to math/large_factorial.cpp
diff --git a/others/large_number.h b/math/large_number.h
similarity index 100%
rename from others/large_number.h
rename to math/large_number.h