diff --git a/src/math.ts b/src/math.ts
index ea72e07..ca396d4 100644
--- a/src/math.ts
+++ b/src/math.ts
@@ -1,18 +1,30 @@
 // ### LEVEL 1: The Basics ###
 export function add(x: number, y: number): number {
   // TODO: Return the sum of x and y
-  throw new Error("Not implemented");
+  return x + y;
 }
 
 // ### LEVEL 2: Fizz Buzz ###
 export function fizzBuzz(value: number): string {
   // TODO: Return Fizz if value is divisible by 3, Buzz if value is divisible by 5,
   //       FizzBuzz if value is divisible by 3 and 5, and the value as a string otherwise
-  throw new Error("Not implemented");
+  if (value % 3 === 0) {
+    if (value % 5 === 0) {
+      return "FizzBuzz";
+    }
+
+    return "Fizz";
+  }
+
+  if (value % 5 === 0) {
+    return "Buzz";
+  }
+
+  return value.toString();
 }
 
 // ### LEVEL 3: Length of vector ###
 export function getLengthOfVector(vec: [number, number]): number {
   // TODO: Return the length of the vector
-  throw new Error("Not implemented");
+  return Math.sqrt(vec[0] * vec[0] + vec[1] * vec[1]);
 }