diff --git a/reasoning_gym/arithmetic/fraction_simplification.py b/reasoning_gym/arithmetic/fraction_simplification.py
index 817005d4..4d476bb1 100644
--- a/reasoning_gym/arithmetic/fraction_simplification.py
+++ b/reasoning_gym/arithmetic/fraction_simplification.py
@@ -62,6 +62,10 @@ class FractionSimplificationDataset:
             # Check if simplified fraction is within bounds
             if (self.config.min_value <= simplified_num <= self.config.max_value and
                 self.config.min_value <= simplified_den <= self.config.max_value):
+                # Ensure numerator is smaller than denominator
+                if simplified_num > simplified_den:
+                    simplified_num, simplified_den = simplified_den, simplified_num
+                
                 # Multiply both by a random factor to create the unsimplified version
                 factor = rng.randint(self.config.min_factor, self.config.max_factor)
                 numerator = simplified_num * factor
@@ -72,6 +76,11 @@ class FractionSimplificationDataset:
         # generate one that's guaranteed to be within bounds
         simplified_num = rng.randint(self.config.min_value, self.config.max_value)
         simplified_den = rng.randint(self.config.min_value, self.config.max_value)
+        
+        # Ensure numerator is smaller than denominator
+        if simplified_num > simplified_den:
+            simplified_num, simplified_den = simplified_den, simplified_num
+            
         factor = rng.randint(self.config.min_factor, self.config.max_factor)
         return (simplified_num * factor, simplified_den * factor, 
                 simplified_num, simplified_den)