The Science edition (Math outside of Japan) deals with numbers and math puzzles. The new puzzle included in this edition are Sum Totaled, By the Numbers, and Multitasker. The Brain Age Check includes High Number, Speed Counting, Serial Subtraction, Math Recall, and Number Memory. The Training puzzles include Calculations X20, Calculations X100, Triangle Math, and Change Maker.
Source: Wikipedia, "Brain Age Express", available under the CC-BY-SA License.