diff --git a/Project-Euler/Problem2.js b/Project-Euler/Problem002.js
similarity index 100%
rename from Project-Euler/Problem2.js
rename to Project-Euler/Problem002.js
diff --git a/Project-Euler/Problem3.js b/Project-Euler/Problem003.js
similarity index 100%
rename from Project-Euler/Problem3.js
rename to Project-Euler/Problem003.js
diff --git a/Project-Euler/Problem4.js b/Project-Euler/Problem004.js
similarity index 100%
rename from Project-Euler/Problem4.js
rename to Project-Euler/Problem004.js
diff --git a/Project-Euler/Problem5.js b/Project-Euler/Problem005.js
similarity index 100%
rename from Project-Euler/Problem5.js
rename to Project-Euler/Problem005.js
diff --git a/Project-Euler/Problem6.js b/Project-Euler/Problem006.js
similarity index 100%
rename from Project-Euler/Problem6.js
rename to Project-Euler/Problem006.js
diff --git a/Project-Euler/Problem7.js b/Project-Euler/Problem007.js
similarity index 100%
rename from Project-Euler/Problem7.js
rename to Project-Euler/Problem007.js
diff --git a/Project-Euler/Problem8.js b/Project-Euler/Problem008.js
similarity index 100%
rename from Project-Euler/Problem8.js
rename to Project-Euler/Problem008.js
diff --git a/Project-Euler/Problem9.js b/Project-Euler/Problem009.js
similarity index 100%
rename from Project-Euler/Problem9.js
rename to Project-Euler/Problem009.js
diff --git a/Project-Euler/Problem10.js b/Project-Euler/Problem010.js
similarity index 100%
rename from Project-Euler/Problem10.js
rename to Project-Euler/Problem010.js
diff --git a/Project-Euler/test/Problem8.test.js b/Project-Euler/test/Problem008.test.js
similarity index 98%
rename from Project-Euler/test/Problem8.test.js
rename to Project-Euler/test/Problem008.test.js
index 3fbb0d5ad..b9d27324c 100644
--- a/Project-Euler/test/Problem8.test.js
+++ b/Project-Euler/test/Problem008.test.js
@@ -1,4 +1,4 @@
-import { largestAdjacentNumber } from '../Problem8'
+import { largestAdjacentNumber } from '../Problem008'
 
 const grid1 = `73167176531330624919225119674426574742355349194934
 96983520312774506326239578318016984801869478851843
diff --git a/Project-Euler/test/Problem10.test.js b/Project-Euler/test/Problem010.test.js
similarity index 89%
rename from Project-Euler/test/Problem10.test.js
rename to Project-Euler/test/Problem010.test.js
index 2c1545cd1..da551e4fa 100644
--- a/Project-Euler/test/Problem10.test.js
+++ b/Project-Euler/test/Problem010.test.js
@@ -1,4 +1,4 @@
-import { calculateSumOfPrimeNumbers } from '../Problem10'
+import { calculateSumOfPrimeNumbers } from '../Problem010'
 
 describe('checkAnagram', () => {
   it('Return the sum of prime numbers upto but less than 14', () => {