5th grade find the unknown variables pre algebra scientist game, Pre-algebra equations usually are linear equations that have one unknown variable usually denoted by a letter. Under pre-algebra topics, students will learn how to make an unknown value the subject of the formula otherwise they will learn how to find the value of missing variables in a linear equation. For example, you are asked to find the value of �b� in the following equation: 2b + 2 = 12, find the value of �b�. This online math quiz contains over 10 problems for students to solve. As a student finds the value of an unknown variable, they earn points. At the end of the quiz, student�s scores will be displayed. Based on this, you will find out how good your skills on pre-algebra are. The quiz can be taken multiple times until a student is satisfied with the outcome. The game is for 4th, 5th and 6th graders.