GMAS Sample Questions: Grade 8 MATH

The GMAS is a Computer-Based Longitudinal Assessment System for College and Career Readiness. The students will face a variety of new technology-enhanced questions as a part of the computer-based tests.

Some of them are Multiple choice-single correct responses, Multiple choice-multiple correct responses, Matching Tables, Drag and Drop, Hot text, Table Fill in, Graphing, Equation/numeric, Extended constructed response, Short answer, and many more.

Today, we will share several sample questions along with practice test links for grade 8 Math that gives you an idea of questions that your students are likely to see on the test. After each sample question, an explanation follows that includes any important aspects of the task that you may need to consider with respect to the skills, processes, and information your students need to know.

Domain: Grade 8 >> The Number System

Sample Question: What letter is used to represent the set of natural numbers?

  1. R
  2. Q
  3. W
  4. N

Answer Explanation: The natural numbers, N, are used for counting.

Standards: MGSE8.NS.1

Click here to practice: The Number System Questions on 8th Grade

Domain: Grade 8 >> Expressions & Equations

Sample Question: Which expression has the same value as 10√54 ÷ √60?

  1. 30 ÷ √10
  2. 10 ÷ √10
  3. 25 ÷ √10
  4. 90 ÷ √10

Answer Explanation: 10√54 ÷ √60 = 10√9√6 ÷ √6√10 =10√9 ÷ √10 = 30 ÷ √10

Standards: MGSE8.EE.2

Click here to practice: Grade 8 Expressions & Equations Questions

Domain: Grade 8 >> Functions

Sample Question: A linear function includes the ordered pairs (2, 1), (5, 7), and (7, k). What is the value of k?

  1. 10
  2. 11
  3. 12
  4. 13

Answer Explanation: (k-7)/(7-5) = (7-1)/(5-2)

3(k-7) = (2)(6) = 12




Standards: MGSE8.F.3

Click here to practice: 8 Grade Functions Questions

Domain: Grade 8 >> Geometry

Sample Question: Two parallel line segments shrink to half their size and their slope does not change. What transformation has taken place?

  1. reflection
  2. translation
  3. No transformation has taken place.
  4. dilation

Answer Explanation: This is a dilation, since the length of the segment has changed.

Standards: MGSE8.G.1

Click here to practice: Geometry Questions for 8th Grade

Domain: Grade 8 >> Statistics & Probability

Sample Question: Which equality represents the best-fit line?

  1. y = x
  2. y = 4
  3. y = -4
  4. y = 4x

Answer Explanation: y is a positive and it is constant so y=4 is the correct choice.

Standards: MGSE8.SP.3

Click here to practice: Statistics & Probability Questions for 8th Grade

Looking for online practice tests? Here is the link to practice more of GMAS Grade 8 Math questions.


Jaci Smith