diff --git a/exercises/001-isOldEnoughToDrink/app.js b/exercises/001-isOldEnoughToDrink/app.js
index c4d3bab4d..9436245df 100644
--- a/exercises/001-isOldEnoughToDrink/app.js
+++ b/exercises/001-isOldEnoughToDrink/app.js
@@ -1,4 +1,4 @@
 function isOldEnoughToDrink(age) {
     // your code here
-    
+return age >= 21
 }
diff --git a/exercises/002-isOldEnoughToDrive/app.js b/exercises/002-isOldEnoughToDrive/app.js
index 0ab7348dd..7f0d27a0d 100644
--- a/exercises/002-isOldEnoughToDrive/app.js
+++ b/exercises/002-isOldEnoughToDrive/app.js
@@ -1,4 +1,4 @@
 function isOldEnoughToDrive(age) {
   // your code here
-  
+  return age >= 16
 }
diff --git a/exercises/003-isOldEnoughToVote/app.js b/exercises/003-isOldEnoughToVote/app.js
index 63c4efb41..1fdfbdfdb 100644
--- a/exercises/003-isOldEnoughToVote/app.js
+++ b/exercises/003-isOldEnoughToVote/app.js
@@ -1,4 +1,4 @@
 function isOldEnoughToVote(age) {
   // your code here
-  
+  return age >= 18
 }
diff --git a/exercises/004-isOldEnoughToDrinkAndDrive/app.js b/exercises/004-isOldEnoughToDrinkAndDrive/app.js
index c8c52473a..16b14fbc2 100644
--- a/exercises/004-isOldEnoughToDrinkAndDrive/app.js
+++ b/exercises/004-isOldEnoughToDrinkAndDrive/app.js
@@ -1,4 +1,4 @@
 function isOldEnoughToDrinkAndDrive(age) {
   // your code here
-  
+return false
 }
diff --git a/exercises/005-checkAge/app.js b/exercises/005-checkAge/app.js
index 0ff57081e..1e437f8d2 100644
--- a/exercises/005-checkAge/app.js
+++ b/exercises/005-checkAge/app.js
@@ -1,4 +1,6 @@
 function checkAge(name, age) {
   // your code here
+  if (age < 21) return `Go home, ${name}!`
+  else return `Welcome, ${name}!`
   
 }
diff --git a/exercises/006-getFullName/app.js b/exercises/006-getFullName/app.js
index e8d8b83a8..c14d27a49 100644
--- a/exercises/006-getFullName/app.js
+++ b/exercises/006-getFullName/app.js
@@ -1,4 +1,4 @@
 function getFullName(firstName, lastName) {
   // your code here
-  
+  return firstName + " " + lastName
 }
diff --git a/exercises/007-getLengthOfWord/app.js b/exercises/007-getLengthOfWord/app.js
index 8d04d4f58..faf440642 100644
--- a/exercises/007-getLengthOfWord/app.js
+++ b/exercises/007-getLengthOfWord/app.js
@@ -1,4 +1,4 @@
 function getLengthOfWord(word) {
   // your code here
-  
+  return word.length;
 }
diff --git a/exercises/008-getLengthOfTwoWords/app.js b/exercises/008-getLengthOfTwoWords/app.js
index 032c8cff4..411783c96 100644
--- a/exercises/008-getLengthOfTwoWords/app.js
+++ b/exercises/008-getLengthOfTwoWords/app.js
@@ -1,4 +1,4 @@
 function getLengthOfTwoWords(word1, word2) {
   // your code here
-  
+  return word1.length + word2.length
 }
diff --git a/exercises/009-getLengthOfThreeWords/app.js b/exercises/009-getLengthOfThreeWords/app.js
index 9049a6d5d..f1efe2f4f 100644
--- a/exercises/009-getLengthOfThreeWords/app.js
+++ b/exercises/009-getLengthOfThreeWords/app.js
@@ -1,6 +1,6 @@
 function getLengthOfThreeWords(word1, word2, word3) {
   // your code here
-  
+  return word1.length + word2.length + word3.length
 }
 
 let output = getLengthOfThreeWords('some', 'other', 'words');
diff --git a/exercises/010-isSameLength/app.js b/exercises/010-isSameLength/app.js
index 6ebc804ae..085816268 100644
--- a/exercises/010-isSameLength/app.js
+++ b/exercises/010-isSameLength/app.js
@@ -1 +1,4 @@
-// Write your function here
\ No newline at end of file
+// Write your function here
+function isSameLength (word1, word2) {
+    return word1.length == word2.length;
+}
diff --git a/exercises/011-isGreaterThanTen/app.js b/exercises/011-isGreaterThanTen/app.js
index b60c49b11..2d274bf74 100644
--- a/exercises/011-isGreaterThanTen/app.js
+++ b/exercises/011-isGreaterThanTen/app.js
@@ -1,4 +1,4 @@
 function isGreaterThanTen(num) {
   // your code here
-  
+  return num > 10
 }
diff --git a/exercises/012-isLessThanThirty/app.js b/exercises/012-isLessThanThirty/app.js
index a9612b873..f1a73962c 100644
--- a/exercises/012-isLessThanThirty/app.js
+++ b/exercises/012-isLessThanThirty/app.js
@@ -1,4 +1,4 @@
 function isLessThan30(num) {
   // your code here
-  
+  return num < 30
 }
diff --git a/exercises/013-equalsTen/app.js b/exercises/013-equalsTen/app.js
index 0d5c28e62..25c7bf3e5 100644
--- a/exercises/013-equalsTen/app.js
+++ b/exercises/013-equalsTen/app.js
@@ -1,4 +1,4 @@
 function equalsTen(num) {
   // your code here
-  
+  return num == 10
 }
diff --git a/exercises/014-isLessThan/app.js b/exercises/014-isLessThan/app.js
index d7572d4ad..6fac9d5c0 100644
--- a/exercises/014-isLessThan/app.js
+++ b/exercises/014-isLessThan/app.js
@@ -1,3 +1,4 @@
 function isLessThan(num1, num2) {
   // your code here
+  return num2 < num1
 }