diff --git a/solutions/gleam/difference-of-squares/1/src/difference_of_squares.gleam b/solutions/gleam/difference-of-squares/1/src/difference_of_squares.gleam
new file mode 100644
index 0000000..e982b73
--- /dev/null
+++ b/solutions/gleam/difference-of-squares/1/src/difference_of_squares.gleam
@@ -0,0 +1,13 @@
+import gleam/list
+pub fn square_of_sum(n: Int) -> Int {
+  let x: Int = n * {n + 1} / 2
+  x*x
+}
+
+pub fn sum_of_squares(n: Int) -> Int {
+  n*{n + 1}*{2*n + 1} / 6
+}
+
+pub fn difference(n: Int) -> Int {
+  square_of_sum(n) - sum_of_squares(n)
+}