diff --git a/math_utils.py b/math_utils.py
new file mode 100644
index 0000000..12aab18
--- /dev/null
+++ b/math_utils.py
@@ -0,0 +1,36 @@
+"""Math utility functions."""
+import math
+
+
+def fibonacci(n: int) -> list[int]:
+    if n <= 0:
+        return []
+    if n == 1:
+        return [0]
+    seq = [0, 1]
+    for _ in range(2, n):
+        seq.append(seq[-1] + seq[-2])
+    return seq
+
+
+def is_prime(n: int) -> bool:
+    if n < 2:
+        return False
+    for i in range(2, int(math.sqrt(n)) + 1):
+        if n % i == 0:
+            return False
+    return True
+
+
+def gcd(a: int, b: int) -> int:
+    while b:
+        a, b = b, a % b
+    return a
+
+
+def lcm(a: int, b: int) -> int:
+    return abs(a * b) // gcd(a, b)
+
+
+def clamp(value: float, min_val: float, max_val: float) -> float:
+    return max(min_val, min(value, max_val))