diff --git a/src/projecteuler/problem0006.ts b/src/projecteuler/problem0006.ts
index e8160bd9..1b0e11b0 100644
--- a/src/projecteuler/problem0006.ts
+++ b/src/projecteuler/problem0006.ts
@@ -38,7 +38,7 @@ function problem0006(_bottom = 1, _top = 100): number {
     }`
   );
 
-  console.log('Problem 0006 result: %i', answer);
+  console.log(`Problem 0006 result: ${answer}`);
   return answer;
 }
 
diff --git a/src/projecteuler/problem0018.ts b/src/projecteuler/problem0018.ts
index 4e6f5e84..12b2b859 100644
--- a/src/projecteuler/problem0018.ts
+++ b/src/projecteuler/problem0018.ts
@@ -9,10 +9,13 @@ const rootCoordinateI = 0;
 const rootCoordinateJ = 0;
 
 export function problem0018(_triangle: number[][]): number {
-  console.debug('_triangle', _triangle);
+  console.debug(`_triangle: ${_triangle}`);
   console.debug(
-    '_triangle',
-    JSON.stringify(BNodeBuilder.buildBNodeTree(_triangle, 0, 0), null, 4)
+    `_triangle: ${JSON.stringify(
+      BNodeBuilder.buildBNodeTree(_triangle, 0, 0),
+      null,
+      4
+    )}`
   );
 
   const leafs: number[] = [];
@@ -24,8 +27,9 @@ export function problem0018(_triangle: number[][]): number {
     leafs
   );
 
-  console.debug('_triangle', JSON.stringify(weightsTree, null, 4));
-  console.debug('leafs count', leafs.length, 'leafs', leafs);
+  console.debug(`_triangle: ${JSON.stringify(weightsTree, null, 4)}`);
+  console.debug(`leafs count: ${leafs.length}`);
+  console.debug(`leafs: ${leafs}`);
 
   const max = leafs.reduce((a, b) => (a > b ? a : b));
 
diff --git a/src/projecteuler/problem0020.ts b/src/projecteuler/problem0020.ts
index 6b11766c..e8b28637 100644
--- a/src/projecteuler/problem0020.ts
+++ b/src/projecteuler/problem0020.ts
@@ -16,7 +16,7 @@ import { bigFactorial, bigSumMany } from './helpers';
 export function problem0020(_limit: number): string {
   const strFactorial = bigFactorial(_limit);
 
-  console.log(`Factorial of ${_limit}!:`, strFactorial);
+  console.log(`Factorial of ${_limit}!: ${strFactorial}`);
 
   const digits = strFactorial.split('');
 
diff --git a/src/projecteuler/problem0021.ts b/src/projecteuler/problem0021.ts
index 3cde715b..4dfd3148 100644
--- a/src/projecteuler/problem0021.ts
+++ b/src/projecteuler/problem0021.ts
@@ -40,8 +40,8 @@ export function problem0021(_start: number, _limit: number): string {
     }
   });
 
-  console.log(`result`, properDivisorsOf);
-  console.log(`amicableNumbers`, amicableNumbers);
+  console.log(`result: ${properDivisorsOf}`);
+  console.log(`amicableNumbers: ${amicableNumbers}`);
 
   return bigSumMany(amicableNumbers);
 }
diff --git a/src/projecteuler/problem0022.ts b/src/projecteuler/problem0022.ts
index 68510c0a..f1fca53b 100644
--- a/src/projecteuler/problem0022.ts
+++ b/src/projecteuler/problem0022.ts
@@ -15,7 +15,7 @@ export function problem0022(listOfNames: string[]): number {
     result += (i + 1) * wordScore(listOfNames[i]);
   }
 
-  console.log(`result`, result);
+  console.log(`result: ${result}`);
 
   return result;
 }