10 STEM apps that teach you math

Operation Math

The stakes are high in Operation Math -- you must defeat international menace Dr. Odd. Players are spies and must complete timed missions involving addition, subtraction, division, and multiplication drills. It's the next best thing to having James Bond at career day. $2.99. Available for iOS and Android.

By Erin Carson

Erin Carson is a Staff Reporter for CNET and a former Multimedia Editor for TechRepublic.