diff --git a/Sprint-2/1-key-errors/0.js b/Sprint-2/1-key-errors/0.js
index 653d6f5a07..e2afcf5aa6 100644
--- a/Sprint-2/1-key-errors/0.js
+++ b/Sprint-2/1-key-errors/0.js
@@ -5,7 +5,7 @@
 // interpret the error message and figure out why an error is occurring
 
 function capitalise(str) {
-  let str = `${str[0].toUpperCase()}${str.slice(1)}`;
+   str = `${str[0].toUpperCase()}${str.slice(1)}`;
   return str;
 }
 
diff --git a/Sprint-2/1-key-errors/1.js b/Sprint-2/1-key-errors/1.js
index f2d56151f4..21beb421ef 100644
--- a/Sprint-2/1-key-errors/1.js
+++ b/Sprint-2/1-key-errors/1.js
@@ -5,14 +5,13 @@
 
 // Try playing computer with the example to work out what is going on
 
-function convertToPercentage(decimalNumber) {
-  const decimalNumber = 0.5;
+function convertToPercentage(decimalNumber) {  
   const percentage = `${decimalNumber * 100}%`;
 
   return percentage;
 }
-
-console.log(decimalNumber);
+const result =  convertToPercentage(0.5);
+console.log(result);
 
 // =============> write your explanation here
 
diff --git a/Sprint-2/1-key-errors/2.js b/Sprint-2/1-key-errors/2.js
index aad57f7cfe..c6d0fd577f 100644
--- a/Sprint-2/1-key-errors/2.js
+++ b/Sprint-2/1-key-errors/2.js
@@ -5,9 +5,12 @@
 
 // =============> write your prediction of the error here
 
-function square(3) {
+function square(num) {
     return num * num;
 }
+const result = square(3)
+console.log(result);
+
 
 // =============> write the error message here
 
diff --git a/Sprint-2/2-mandatory-debug/0.js b/Sprint-2/2-mandatory-debug/0.js
index b27511b417..4d6d7bc727 100644
--- a/Sprint-2/2-mandatory-debug/0.js
+++ b/Sprint-2/2-mandatory-debug/0.js
@@ -3,7 +3,7 @@
 // =============> write your prediction here
 
 function multiply(a, b) {
-  console.log(a * b);
+  return a * b ;
 }
 
 console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`);
diff --git a/Sprint-2/2-mandatory-debug/1.js b/Sprint-2/2-mandatory-debug/1.js
index 37cedfbcfd..b11443f14c 100644
--- a/Sprint-2/2-mandatory-debug/1.js
+++ b/Sprint-2/2-mandatory-debug/1.js
@@ -2,8 +2,7 @@
 //  =============> write your prediction here
 
 function sum(a, b) {
-  return;
-  a + b;
+  return a + b;
 }
 
 console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);
diff --git a/Sprint-2/2-mandatory-debug/2.js b/Sprint-2/2-mandatory-debug/2.js
index 57d3f5dc35..6d3b7cd76a 100644
--- a/Sprint-2/2-mandatory-debug/2.js
+++ b/Sprint-2/2-mandatory-debug/2.js
@@ -5,8 +5,8 @@
 
 const num = 103;
 
-function getLastDigit() {
-  return num.toString().slice(-1);
+function getLastDigit(numbertoconvert) {
+  return numbertoconvert.toString().slice(-1);
 }
 
 console.log(`The last digit of 42 is ${getLastDigit(42)}`);
diff --git a/Sprint-2/3-mandatory-implement/1-bmi.js b/Sprint-2/3-mandatory-implement/1-bmi.js
index 17b1cbde1b..c934f1940f 100644
--- a/Sprint-2/3-mandatory-implement/1-bmi.js
+++ b/Sprint-2/3-mandatory-implement/1-bmi.js
@@ -15,5 +15,10 @@
 // It should return their Body Mass Index to 1 decimal place
 
 function calculateBMI(weight, height) {
+    const bmi = weight / (height * height);
+    return Number(bmi.toFixed(1));
     // return the BMI of someone based off their weight and height
-}
\ No newline at end of file
+}
+
+console.log(calculateBMI(70, 1.73));
+console.log(calculateBMI(85, 1.80));
diff --git a/Sprint-2/3-mandatory-implement/2-cases.js b/Sprint-2/3-mandatory-implement/2-cases.js
index 5b0ef77ad9..92e98f4b63 100644
--- a/Sprint-2/3-mandatory-implement/2-cases.js
+++ b/Sprint-2/3-mandatory-implement/2-cases.js
@@ -14,3 +14,11 @@
 // You will need to come up with an appropriate name for the function
 // Use the MDN string documentation to help you find a solution
 // This might help https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/toUpperCase
+function toUpperSnakeCase(str){
+let wordWithUnderscores = str.replaceAll(" ", "_");
+
+let finalResult = wordWithUnderscores.toUpperCase();
+return finalResult;
+}
+console.log(toUpperSnakeCase("hello there")); 
+console.log(toUpperSnakeCase("lord of the rings")); 
diff --git a/Sprint-2/3-mandatory-implement/3-to-pounds.js b/Sprint-2/3-mandatory-implement/3-to-pounds.js
index 6265a1a703..55481a9e57 100644
--- a/Sprint-2/3-mandatory-implement/3-to-pounds.js
+++ b/Sprint-2/3-mandatory-implement/3-to-pounds.js
@@ -4,3 +4,32 @@
 // You will need to declare a function called toPounds with an appropriately named parameter.
 
 // You should call this function a number of times to check it works for different inputs
+
+function toPounds(penceString) {
+
+  const penceStringWithoutTrailingP = penceString.substring(
+    0,
+    penceString.length - 1
+  );
+
+
+  const paddedPenceNumberString = penceStringWithoutTrailingP.padStart(3, "0");
+
+
+  const pounds = paddedPenceNumberString.substring(
+    0,
+    paddedPenceNumberString.length - 2
+  );
+
+
+  const pence = paddedPenceNumberString.substring(paddedPenceNumberString.length - 2);
+
+ 
+  return `£${pounds}.${pence}`;
+}
+
+
+console.log(toPounds("399p")); 
+console.log(toPounds("50p"));  
+console.log(toPounds("1005p"));
+console.log(toPounds("1p"));   
\ No newline at end of file
diff --git a/Sprint-2/4-mandatory-interpret/time-format.js b/Sprint-2/4-mandatory-interpret/time-format.js
index 7c98eb0e8c..53139567cc 100644
--- a/Sprint-2/4-mandatory-interpret/time-format.js
+++ b/Sprint-2/4-mandatory-interpret/time-format.js
@@ -17,18 +17,19 @@ function formatTimeDisplay(seconds) {
 // Questions
 
 // a) When formatTimeDisplay is called how many times will pad be called?
-// =============> write your answer here
+// =============> 3 times .In the last line of the formatTimeDisplay function, you can see the word pad written three times
 
 // Call formatTimeDisplay with an input of 61, now answer the following:
 
 // b) What is the value assigned to num when pad is called for the first time?
-// =============> write your answer here
+// =============> 0
 
 // c) What is the return value of pad is called for the first time?
-// =============> write your answer here
+// =============> 00
 
 // d) What is the value assigned to num when pad is called for the last time in this program?  Explain your answer
-// =============> write your answer here
+// =============> 1 The last time the program calls pad, it is looking for the remainingSeconds. When you have 61 seconds, 60 of them make a full minute, and you have 1 second left over. That leftover 1 is what gets sent to num
 
+//
 // e) What is the return value assigned to num when pad is called for the last time in this program?  Explain your answer
-// =============> write your answer here
+// =============> 01 .The function takes the number 1. Because the code says padStart(2, "0"), it says: "Hey, this needs to be 2 characters long!". So, it puts a 0 in front of the 1, making it "01".
diff --git a/Sprint-2/5-stretch-extend/format-time.js b/Sprint-2/5-stretch-extend/format-time.js
index 32a32e66b8..e8ea3f9c82 100644
--- a/Sprint-2/5-stretch-extend/format-time.js
+++ b/Sprint-2/5-stretch-extend/format-time.js
@@ -4,22 +4,34 @@
 
 function formatAs12HourClock(time) {
   const hours = Number(time.slice(0, 2));
-  if (hours > 12) {
-    return `${hours - 12}:00 pm`;
+  const minute = time.slice(3, 5);
+
+  let period = "am";
+  let displayHours = hours;
+
+ if (hours === 12) {
+    period = "pm";
+  } else if (hours > 12) {
+    displayHours = hours - 12;
+    period = "pm";
+  } else if (hours === 0) {
+    // 3. Handle Midnight
+    displayHours = 12;
   }
-  return `${time} am`;
+
+
+const formattedHours = displayHours.toString().padStart(2, "0");
+
+  return `${formattedHours}:${minutes} ${period}`;
 }
 
-const currentOutput = formatAs12HourClock("08:00");
-const targetOutput = "08:00 am";
-console.assert(
-  currentOutput === targetOutput,
-  `current output: ${currentOutput}, target output: ${targetOutput}`
-);
-
-const currentOutput2 = formatAs12HourClock("23:00");
-const targetOutput2 = "11:00 pm";
-console.assert(
-  currentOutput2 === targetOutput2,
-  `current output: ${currentOutput2}, target output: ${targetOutput2}`
-);
+
+console.assert(formatAs12HourClock("08:30") === "08:30 am", "Error at 08:30");
+
+console.assert(formatAs12HourClock("23:45") === "11:45 pm", "Error at 23:45");
+
+console.assert(formatAs12HourClock("12:00") === "12:00 pm", "Error at 12:00");
+
+console.assert(formatAs12HourClock("00:15") === "12:15 am", "Error at 00:15");
+
+console.log("If you see no error messages above, all tests passed!");
\ No newline at end of file