diff --git a/Problem_1.py b/Problem_001.py
similarity index 100%
rename from Problem_1.py
rename to Problem_001.py
diff --git a/Problem_2.py b/Problem_002.py
similarity index 100%
rename from Problem_2.py
rename to Problem_002.py
diff --git a/Problem_3.py b/Problem_003.py
similarity index 100%
rename from Problem_3.py
rename to Problem_003.py
diff --git a/Problem_4.py b/Problem_004.py
similarity index 100%
rename from Problem_4.py
rename to Problem_004.py
diff --git a/Problem_5.py b/Problem_005.py
similarity index 100%
rename from Problem_5.py
rename to Problem_005.py
diff --git a/Problem_6.py b/Problem_006.py
similarity index 100%
rename from Problem_6.py
rename to Problem_006.py
diff --git a/Problem_7.py b/Problem_007.py
similarity index 100%
rename from Problem_7.py
rename to Problem_007.py
diff --git a/Problem_8.py b/Problem_008.py
similarity index 100%
rename from Problem_8.py
rename to Problem_008.py
diff --git a/Problem_9.py b/Problem_009.py
similarity index 100%
rename from Problem_9.py
rename to Problem_009.py
diff --git a/Problem_10.py b/Problem_010.py
similarity index 100%
rename from Problem_10.py
rename to Problem_010.py
diff --git a/Problem_11.py b/Problem_011.py
similarity index 100%
rename from Problem_11.py
rename to Problem_011.py
diff --git a/Problem_12.py b/Problem_012.py
similarity index 100%
rename from Problem_12.py
rename to Problem_012.py
diff --git a/Problem_13.py b/Problem_013.py
similarity index 100%
rename from Problem_13.py
rename to Problem_013.py
diff --git a/Problem_14.py b/Problem_014.py
similarity index 100%
rename from Problem_14.py
rename to Problem_014.py