Algebra addition with missing variable - Pirate Gamer Online

Algebra addition with missing variable - Pirate Gamer Online For first, second, third, 4th grade math revision | Pirage Game | Math games online for children. Solving algebra 1 problems that contain addition operations in linear equations having an unknown value. Students are required to find this missing number amongt a set of choices. Only one is correct. First solve the problem on a piece of paper before selecting your answer.