The math section of the GED test is part multiple choice and part fill-in-the-blank.

The math portion of the GED test has two sections with a total of 50 questions, and you have 45 minutes to complete each part. According to the GED Testing Service in 2013, 40 to 60 percent of math sections test your skills and knowledge in the areas of algebra and geometry. To get the algebra and geometry questions correct, you must know how to correctly apply the formulas provided in the testing booklet and use basic math principles.

Algebra Questions

The algebra questions on the GED test require you to know how to use a number line, basic math principles and equations to solve problems. To get these questions correct, you have to know how to add, subtract, multiply and divide negative and positive numbers so you can determine the unknown variables. The McGraw-Hill Online Learning Center says that some problems may ask you to simplify an algebraic expressions like “a(b+c),” which equals “ab+ac” when simplified. You must also know how to determine key words and phrases in word problems so you can correctly write an algebraic expression and solve the answer.

Geometry Questions

To answer the geometry questions on the GED test, you must have knowledge of basic shapes, plane figures and angles, as well as the terms related to geometric shapes. Examples of terms include “diameter,” the distance across a circle, and “supplementary angels,” which are two angles that equal 180 degrees. In some geometry questions, you'll have to identify the area or perimeter of a shape, know how to determine the size of an angle or figure out the volume of solid figures. You should also know how to apply the Pythagorean Theorem correctly to determine the length of the sides of a triangle.