Now, he solves for an unknown in any position. This video addresses Common Core Grade 2 Standard Operations & Algebraic Thinking: Represent and solve problems involving addition and subtraction.

All the Latest Game Footage and Images from Math Genius: Subtraction Math Genius: Subtraction is a fun and educational game that challenges players with randomly generated multiplication problems.

In this lesson, students put all of their addition and subtraction skills together to solve equations. Julia begins with a Number of the Day warm up activity, followed by practicing 2 and 3 ...