diff --git a/reasoning_gym/arithmetic/basic_arithmetic.py b/reasoning_gym/arithmetic/basic_arithmetic.py
index 2cea91fd..9a97f35b 100644
--- a/reasoning_gym/arithmetic/basic_arithmetic.py
+++ b/reasoning_gym/arithmetic/basic_arithmetic.py
@@ -141,6 +141,19 @@ class ArithmeticDataset:
         expression = " ".join(expression_parts)
         return expression, result
 
+    def __iter__(self):
+        """Make the dataset iterable"""
+        self._current_idx = 0
+        return self
+        
+    def __next__(self):
+        """Get next item in iteration"""
+        if self._current_idx >= self.config.size:
+            raise StopIteration
+        item = self[self._current_idx]
+        self._current_idx += 1
+        return item
+
     def _format_question(self, expression: str) -> str:
         """Format the expression according to config style"""
         if self.config.format_style == "simple":
diff --git a/tests/test_arithmetic.py b/tests/test_arithmetic.py
index 2ca1d6f1..d95e88db 100644
--- a/tests/test_arithmetic.py
+++ b/tests/test_arithmetic.py
@@ -70,3 +70,29 @@ def test_arithmetic_dataset_format_styles():
     config.format_style = "natural"
     dataset = ArithmeticDataset(config)
     assert all("=" not in item["question"] for item in dataset)
+
+
+def test_arithmetic_dataset_iteration():
+    """Test that iteration respects dataset size"""
+    config = ArithmeticDatasetConfig(
+        min_terms=2,
+        max_terms=2,
+        size=5,  # Small size for testing
+        seed=42
+    )
+    dataset = ArithmeticDataset(config)
+    
+    # Test manual iteration
+    items = []
+    for item in dataset:
+        items.append(item)
+    assert len(items) == config.size, "Iterator should yield exactly size items"
+    
+    # Test list conversion
+    items = list(dataset)
+    assert len(items) == config.size, "Iterator should yield exactly size items"
+    
+    # Test multiple iterations
+    first_items = list(dataset)
+    second_items = list(dataset)
+    assert first_items == second_items, "Multiple iterations should yield same items"