Neural Network Multiple | Averging predictions
There are multiple ways you could do. All of them are categorized under Ensemble methods in machine learning. 

Voting classifiers: which is the simplest way. You just take votes based on the label from all models and uses the majority label. That means, you should first round up all labels to 0 or 1 and then use the majority.

Weighted voting classifiers: similar to previous one, but some models have higher weights in voting. 

For more information look here.