diff --git a/assignments/solutions/solutions_3.md b/assignments/solutions/solutions_3.md
new file mode 100644
index 0000000..9ae75b0
--- /dev/null
+++ b/assignments/solutions/solutions_3.md
@@ -0,0 +1,18 @@
+
+### Added subtraction, multiplication and division to utils
+
+```rust
+
+pub fn sub_u8(x: u8, y: u8) -> u8{
+    x - y
+}
+
+pub fn multiply_u8(x: u8, y: u8) -> u8{
+    x * y
+}
+
+pub fn divide_u8(x: u8, y: u8) -> u8{
+    x / y
+}
+
+```
\ No newline at end of file
diff --git a/src/utils.cairo b/src/utils.cairo
index cf4285f..1cbabb2 100644
--- a/src/utils.cairo
+++ b/src/utils.cairo
@@ -10,4 +10,16 @@ pub fn high_to_low(x: u16) -> u8 {
 
 pub fn sum_u8(x: u8, y: u8) -> u8 {
     x + y
+}
+
+pub fn sub_u8(x: u8, y: u8) -> u8{
+    x - y 
+}
+
+pub fn multiply_u8(x: u8, y: u8) -> u8{ 
+    x * y 
+}
+
+pub fn divide_u8(x: u8, y: u8) -> u8{ 
+    x / y 
 }
\ No newline at end of file