diff --git a/Sprint-1/1-key-exercises/1-count.js b/Sprint-1/1-key-exercises/1-count.js
index 117bcb2b6e..e731a272c8 100644
--- a/Sprint-1/1-key-exercises/1-count.js
+++ b/Sprint-1/1-key-exercises/1-count.js
@@ -4,3 +4,5 @@ count = count + 1;
 
 // Line 1 is a variable declaration, creating the count variable with an initial value of 0
 // Describe what line 3 is doing, in particular focus on what = is doing
+
+// Line 3 is taking the value of count, then adding 1 to that value, then making that new value to be the current count. 
diff --git a/Sprint-1/1-key-exercises/2-initials.js b/Sprint-1/1-key-exercises/2-initials.js
index 47561f6175..0238a71c60 100644
--- a/Sprint-1/1-key-exercises/2-initials.js
+++ b/Sprint-1/1-key-exercises/2-initials.js
@@ -5,7 +5,7 @@ let lastName = "Johnson";
 // Declare a variable called initials that stores the first character of each string.
 // This should produce the string "CKJ", but you must not write the characters C, K, or J in the code of your solution.
 
-let initials = ``;
+let initials = firstName[0] + middleName[0] + lastName[0];
 
 // https://www.google.com/search?q=get+first+character+of+string+mdn
 
diff --git a/Sprint-1/1-key-exercises/3-paths.js b/Sprint-1/1-key-exercises/3-paths.js
index ab90ebb28e..0574e974d7 100644
--- a/Sprint-1/1-key-exercises/3-paths.js
+++ b/Sprint-1/1-key-exercises/3-paths.js
@@ -17,7 +17,7 @@ console.log(`The base part of ${filePath} is ${base}`);
 // Create a variable to store the dir part of the filePath variable
 // Create a variable to store the ext part of the variable
 
-const dir = ;
-const ext = ;
+const dir = filePath.slice (0,lastSlashIndex +1);
+const ext = filePath.slice (filePath.lastIndexOf ("."));
 
 // https://www.google.com/search?q=slice+mdn
\ No newline at end of file
diff --git a/Sprint-1/1-key-exercises/4-random.js b/Sprint-1/1-key-exercises/4-random.js
index 292f83aabb..8226e51fdd 100644
--- a/Sprint-1/1-key-exercises/4-random.js
+++ b/Sprint-1/1-key-exercises/4-random.js
@@ -2,8 +2,14 @@ const minimum = 1;
 const maximum = 100;
 
 const num = Math.floor(Math.random() * (maximum - minimum + 1)) + minimum;
+console.log (num);
 
 // In this exercise, you will need to work out what num represents?
 // Try breaking down the expression and using documentation to explain what it means
 // It will help to think about the order in which expressions are evaluated
 // Try logging the value of num and running the program several times to build an idea of what the program is doing
+
+// From what I can work out, it is generations a random number between 2 and 100 for the value of num.
+// math.floor ensures the number is a whole number without decibils. (maximum - minimu +1) is (100 - 1 + 1)=100.
+// Math.random pics a random number from 0 to 1 with two decibils, such as 2.13.
+// The Order they follow is: Match.random multiplied by (Maximum - minimum + 1), then add minimum of 1. 
\ No newline at end of file
diff --git a/Sprint-1/2-mandatory-errors/0.js b/Sprint-1/2-mandatory-errors/0.js
index cf6c5039f7..6da3d8f869 100644
--- a/Sprint-1/2-mandatory-errors/0.js
+++ b/Sprint-1/2-mandatory-errors/0.js
@@ -1,2 +1,4 @@
+/*
 This is just an instruction for the first activity - but it is just for human consumption
-We don't want the computer to run these 2 lines - how can we solve this problem?
\ No newline at end of file
+We don't want the computer to run these 2 lines - how can we solve this problem?
+*/
\ No newline at end of file
diff --git a/Sprint-1/2-mandatory-errors/1.js b/Sprint-1/2-mandatory-errors/1.js
index 7a43cbea76..031839b47d 100644
--- a/Sprint-1/2-mandatory-errors/1.js
+++ b/Sprint-1/2-mandatory-errors/1.js
@@ -1,4 +1,4 @@
 // trying to create an age variable and then reassign the value by 1
 
-const age = 33;
+let age = 33;
 age = age + 1;
diff --git a/Sprint-1/2-mandatory-errors/2.js b/Sprint-1/2-mandatory-errors/2.js
index e09b89831d..c441b2e777 100644
--- a/Sprint-1/2-mandatory-errors/2.js
+++ b/Sprint-1/2-mandatory-errors/2.js
@@ -1,5 +1,6 @@
 // Currently trying to print the string "I was born in Bolton" but it isn't working...
 // what's the error ?
 
-console.log(`I was born in ${cityOfBirth}`);
 const cityOfBirth = "Bolton";
+console.log(`I was born in ${cityOfBirth}`);
+
diff --git a/Sprint-1/2-mandatory-errors/3.js b/Sprint-1/2-mandatory-errors/3.js
index ec101884db..afdae65794 100644
--- a/Sprint-1/2-mandatory-errors/3.js
+++ b/Sprint-1/2-mandatory-errors/3.js
@@ -1,9 +1,14 @@
-const cardNumber = 4533787178994213;
+const cardNumber = "4533787178994213";
 const last4Digits = cardNumber.slice(-4);
+console.log (last4Digits)
 
-// The last4Digits variable should store the last 4 digits of cardNumber
-// However, the code isn't working
-// Before running the code, make and explain a prediction about why the code won't work
-// Then run the code and see what error it gives.
-// Consider: Why does it give this error? Is this what I predicted? If not, what's different?
-// Then try updating the expression last4Digits is assigned to, in order to get the correct value
+/*
+The last4Digits variable should store the last 4 digits of cardNumber
+However, the code isn't working
+Before running the code, make and explain a prediction about why the code won't work
+Then run the code and see what error it gives.
+Consider: Why does it give this error? Is this what I predicted? If not, what's different?
+Then try updating the expression last4Digits is assigned to, in order to get the correct value
+I firsth thought the -4 would not work as it starts on 0
+I then recalled the code wont work as the cardNumber is a number and not a string, it needs to be a string for the .slice to work.
+*/
\ No newline at end of file
diff --git a/Sprint-1/2-mandatory-errors/4.js b/Sprint-1/2-mandatory-errors/4.js
index 5f86c730bc..c027f47467 100644
--- a/Sprint-1/2-mandatory-errors/4.js
+++ b/Sprint-1/2-mandatory-errors/4.js
@@ -1,2 +1,2 @@
-const 12HourClockTime = "8:53pm";
-const 24hourClockTime = "20:53";
+const _12HourClockTime = "8:53pm";
+const _24hourClockTime = "20:53";
diff --git a/Sprint-1/3-mandatory-interpret/1-percentage-change.js b/Sprint-1/3-mandatory-interpret/1-percentage-change.js
index e24ecb8e18..47852c3601 100644
--- a/Sprint-1/3-mandatory-interpret/1-percentage-change.js
+++ b/Sprint-1/3-mandatory-interpret/1-percentage-change.js
@@ -20,3 +20,13 @@ console.log(`The percentage change is ${percentageChange}`);
 // d) Identify all the lines that are variable declarations
 
 // e) Describe what the expression Number(carPrice.replaceAll(",","")) is doing - what is the purpose of this expression?
+
+/*    
+a) There are 5 calls made:
+    carPrice = Number(carPrice.replaceAll(",", ""));
+    priceAfterOneYear = Number(priceAfterOneYear.replaceAll("," ""))
+b) Error on line 5 for "," it is missing the seperating , between "," and "".
+c) 4 and 5
+d) 1 and 2, 7 and 8,
+e) It removes the , from the string and replaces it with nothing. Used to help change the string into a number with the "Number" function.
+*/
\ No newline at end of file
diff --git a/Sprint-1/3-mandatory-interpret/2-time-format.js b/Sprint-1/3-mandatory-interpret/2-time-format.js
index 47d2395587..fb5bddae3d 100644
--- a/Sprint-1/3-mandatory-interpret/2-time-format.js
+++ b/Sprint-1/3-mandatory-interpret/2-time-format.js
@@ -23,3 +23,13 @@ console.log(result);
 // e) What do you think the variable result represents? Can you think of a better name for this variable?
 
 // f) Try experimenting with different values of movieLength. Will this code work for all values of movieLength? Explain your answer
+
+/*
+a) There are 6: movieLength, remainingSeconds, totalMinutes, remainingMinutes, totalHours, result.
+b) There is one: console.log.
+c) It is taking the movieLength and doing a remainder that is showing what is left after the vaule has been divided, in this case wil be 84.
+    I found the info here https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Remainder 
+d) It is removing any extra seconds from the division by 60 so that is is showing as whole numbers without decimals.
+e) Result is showing the movies duration but broken down to hours:minutes:seconds, I think it should be movieDuration to help describe it better.
+f) Yes, it does work to show the lenght even if it is only in one section, though it does show values of 0, could clean it up to show nothing.
+*/
\ No newline at end of file
diff --git a/Sprint-1/3-mandatory-interpret/3-to-pounds.js b/Sprint-1/3-mandatory-interpret/3-to-pounds.js
index 60c9ace69a..2bea1f9a57 100644
--- a/Sprint-1/3-mandatory-interpret/3-to-pounds.js
+++ b/Sprint-1/3-mandatory-interpret/3-to-pounds.js
@@ -25,3 +25,11 @@ console.log(`£${pounds}.${pence}`);
 
 // To begin, we can start with
 // 1. const penceString = "399p": initialises a string variable with the value "399p"
+/*
+3-6. It is taking the vaule from pencestring and using substring to return part of the string, by -1 so from the end resualting in "399"
+8. It is now adding "0" infront of vaule if the vaule is under 3 characters in size.
+9-12. Using the substring function to reduce the size of the vaule to just 2 characters.
+14-16. Taking the value from paddedPenceNumberString and this time with substring, only showing the last 2 characters in teh value.
+       Then with using .padEnd it ensures that 2 characters are shown with 0 being there is nothing is there.
+18. howing the resualt of the code starting with a "£" then the value of "pounds" then a "." and lastly value of "pence"
+*/