The GED Mathematical Reasoning test measures whether you can use practical math to solve real problems. It is not a memorization contest. The official GED site says the math test covers Basic Math, Geometry, Basic Algebra, and Graphs and Functions. It also provides access to a formula sheet and calculator reference sheet, with the on-screen calculator available on Part 2 of the test.
The official GED test subjects page lists the Mathematical Reasoning test time as 115 minutes, including instructions, final review, and a short break between parts. ViewMath is independent and is not affiliated with or endorsed by GED Testing Service. Always confirm current details at GED.com test subjects and the official Mathematical Reasoning page.
GED Math Format at a Glance
| Feature | Official Detail | Prep Implication |
|---|---|---|
| Subject name | Mathematical Reasoning | Expect practical problem solving, not only computation. |
| Time | 115 minutes | Practice stamina and pacing. |
| Topics | Basic Math, Geometry, Basic Algebra, Graphs and Functions | Review broadly, then target weak areas. |
| Tools | Formula sheet and calculator reference sheet | Learn how to apply formulas instead of just memorizing them. |
| Question types | Multiple choice and technology-enhanced questions | Practice reading directions carefully. |
Topic 1: Basic Math
Basic Math includes the skills many adult learners have not practiced recently: fractions, decimals, percents, ratios, rates, signed numbers, square roots, and order of operations. These skills appear inside word problems, charts, and measurement questions.
Example: A jacket costs $80 and is discounted by 25%. What is the sale price?
Solution: 25% of $80 is $20, so the sale price is $80 – $20 = $60.
Topic 2: Geometry
GED geometry questions often involve area, perimeter, circumference, volume, Pythagorean theorem, and coordinate geometry. The formula sheet helps, but you still need to know which formula matches the situation. A rectangle area problem and a rectangle perimeter problem can use the same numbers but require different operations.
Example: A rectangular room is 14 feet long and 9 feet wide. What is the area?
Solution: Area = length x width = 14 x 9 = 126 square feet.
Topic 3: Basic Algebra
Basic Algebra includes simplifying expressions, solving equations, using inequalities, interpreting slope, and working with formulas. Many GED algebra questions are not abstract. They describe a cost, distance, paycheck, or pattern and ask you to create or solve an equation.
Example: Solve 3x + 7 = 31.
Solution: Subtract 7 from both sides: 3x = 24. Divide by 3: x = 8.
Topic 4: Graphs and Functions
GED students should be able to read line graphs, bar graphs, tables, and coordinate-plane graphs. Functions may appear as rules, tables, or graphs. The most important skill is connecting the representation to the story.
Example: A taxi charges $4 to start and $2 per mile. Which equation gives the total cost C for m miles?
Solution: Start with $4, then add $2 for each mile: C = 4 + 2m.
How to Use the Formula Sheet
The GED formula sheet is a tool, not a shortcut. Students should practice three steps: identify the shape or relationship, choose the formula, then substitute values. For example, if the problem asks for volume of a cylinder, do not use the circle area formula alone. Use the cylinder volume formula, then check that the answer has cubic units.
Calculator Practice Matters
Because the GED math test provides calculator access on Part 2, students should practice with the allowed calculator tools before test day. Calculator practice does not mean skipping math understanding. It means learning how to enter fractions, negative numbers, exponents, square roots, and parentheses correctly. Many students lose points because they know the setup but type the expression incorrectly.
During practice, write the setup on paper before touching the calculator. For a percent problem, write 0.18 x 250 before calculating. For a geometry problem, write the formula and substitutions first. This habit catches calculator-entry mistakes and helps students explain their work if they need to review later.
Four-Week GED Math Prep Plan
| Week | Focus | Daily Work |
|---|---|---|
| 1 | Arithmetic foundations | Fractions, decimals, percents, ratios, signed numbers. |
| 2 | Algebra | Expressions, equations, inequalities, slope, word-problem setup. |
| 3 | Geometry and formulas | Area, perimeter, volume, Pythagorean theorem, coordinate plane. |
| 4 | Mixed timed review | Practice sets, formula sheet use, calculator fluency, error log. |
Mini Practice Set
- Convert 3/5 to a decimal.
- Find 18% of 250.
- Solve: 5x – 9 = 36.
- A circle has radius 4. What is its area in terms of pi?
- A line passes through (0, 3) and (2, 7). What is its slope?
- A recipe uses 2 cups of rice for 5 servings. How many cups are needed for 15 servings?
Answers
- 0.6
- 45
- x = 9
- 16 pi square units
- 2
- 6 cups
What to Study Last
In the last few days, do not chase every topic. Review the formula sheet, rework missed problems, and practice calculator entry. Many GED math errors come from typing a fraction, negative number, or exponent incorrectly. A student who knows the math but cannot use the calculator efficiently can lose points unnecessarily.
Common GED Math Mistakes
- Reading only the numbers: GED word problems often include extra context. Identify what the question asks before calculating.
- Using the wrong percent base: Percent increase and discount problems depend on the original amount.
- Confusing area and volume: Area uses square units; volume uses cubic units.
- Ignoring graphs: In graph questions, read axis labels and units before using the data.
- Stopping after one practice test: Improvement comes from reviewing mistakes and trying similar problems again.
Thirty-Minute Study Session Template
- Five minutes: review one formula or rule.
- Fifteen minutes: solve 8-10 focused problems.
- Five minutes: check answers and mark error types.
- Five minutes: rework one missed problem without looking at the solution.
ViewMath GED Math resources are designed for focused math review with clear examples, key points, formulas, practice tests, and answer explanations.
