The Bernabeu side had by far the better of the first half as they created the better opportunities, pressed high up the pitch and scored twice in quick succession through Gonzalo Higuain and Angel Di Maria.
After halftime, it was a reversal of roles between the sides, with Real unable to provide their previous link-up play between midfield and attack, and Zaragoza looking the more adventurous and aggressive side.
It took another pair of quick goals, scored in the final minutes of the game, to seal the victory for Real Madrid. Michael Essien and Luka Modric scored them, to rob the away side of any lingering hopes they might have had.
Here are six things we learned from the game in Madrid.