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100+ Free CMAS Math Grade 8 Practice Questions

Prepare for the Colorado Measures of Academic Success (CMAS) Mathematics — Grade 8 exam with instant access — no signup required.

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Key Facts: CMAS Math Grade 8 Exam

Grade 8

CMAS Mathematics tested grade (CDE)

ed.cde.state.co.us/assessment/cmas

Free

No student exam fee for standard school administration

CDE Assessment FAQs

Pearson

CDE assessment contractor; TestNav / PearsonAccessnext delivery

Spring 2026 CMAS Overview

Spring

Primary administration window (2026: April 6–24 for CMAS)

CDE Fact Sheets and FAQs

CAS

Aligned to Colorado Academic Standards grade-level expectations

CDE CMAS overview

650–850

Overall scale score range reported on CMAS score reports

CDE interpretive guides

50–51 pts

Approx. total score points Grades 3–8 math blueprint

2023–2024 CMAS Technical Report Appendix A

3 units

65 minutes per math unit

Spring 2026 CMAS unit times

CMAS Mathematics Grade 8 is Colorado's free statewide spring summative (CDE/Pearson), mixed item types on TestNav, performance levels on a 650–850 scale; practice here is English MCQ study only.

Sample CMAS Math Grade 8 Practice Questions

Try these sample questions to test your CMAS Math Grade 8 exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Simplify: 3^2 · 3^4.
A.3^6
B.3^8
C.9^6
D.6^6
Explanation: When multiplying powers with the same base, add the exponents: 3^2 · 3^4 = 3^(2+4) = 3^6.
2Simplify: (5^3)^2.
A.5^5
B.5^6
C.25^5
D.10^6
Explanation: Power of a power: multiply exponents. (5^3)^2 = 5^(3·2) = 5^6.
3Which expression equals 4^{-2}?
A.-16
B.-8
C.1/16
D.1/8
Explanation: A negative exponent means reciprocal: 4^{-2} = 1/4^2 = 1/16.
4Write 0.00056 in scientific notation.
A.5.6 × 10^{-3}
B.5.6 × 10^{-4}
C.56 × 10^{-5}
D.5.6 × 10^4
Explanation: Move the decimal 4 places right to get 5.6, so 0.00056 = 5.6 × 10^{-4}.
5Write 7.2 × 10^5 in standard form.
A.72,000
B.720,000
C.7,200,000
D.0.000072
Explanation: Multiply 7.2 by 10^5 by moving the decimal 5 places right: 720,000.
6Compute (3 × 10^4)(2 × 10^3).
A.5 × 10^7
B.6 × 10^7
C.6 × 10^{12}
D.5 × 10^{12}
Explanation: Multiply coefficients and add exponents: 3·2 = 6 and 10^{4+3} = 10^7, so 6 × 10^7.
7Compute (8.4 × 10^6) ÷ (2.1 × 10^2).
A.4 × 10^3
B.4 × 10^4
C.6.3 × 10^4
D.4 × 10^8
Explanation: Divide coefficients 8.4/2.1 = 4 and subtract exponents 6−2 = 4: 4 × 10^4.
8Solve: 2x + 7 = 19.
A.x = 5
B.x = 6
C.x = 12
D.x = 13
Explanation: Subtract 7: 2x = 12. Divide by 2: x = 6.
9Solve: 5x − 9 = 3x + 7.
A.x = 2
B.x = 4
C.x = 8
D.x = 16
Explanation: Subtract 3x: 2x − 9 = 7. Add 9: 2x = 16. Divide by 2: x = 8.
10Solve: −3(x − 4) = 18.
A.x = −2
B.x = 2
C.x = −10
D.x = 10
Explanation: Distribute: −3x + 12 = 18. Subtract 12: −3x = 6. Divide by −3: x = −2.

About the CMAS Math Grade 8 Exam

Colorado Measures of Academic Success (CMAS) Mathematics — Grade 8 is Colorado's grade-level Colorado Measures of Academic Success (CMAS) statewide summative assessment, developed by CDE with Colorado educators and Pearson against the Colorado Academic Standards. It is administered in the spring window (for 2026: April 6–24 per CDE FAQs) on Pearson TestNav. Official forms use mixed item types (selected-response, technology-enhanced, and for many content areas constructed-response tasks). OpenExamPrep free practice is an English-language four-option MCQ study adaptation aligned to CMAS reporting categories and grade-level CAS—not official secure items, not a full TE/CR simulation, and not a substitute for classroom instruction or the official assessment.

Assessment

Question count not published by the exam provider

Time Limit

About 3 hours 15 minutes of total student testing time across three units of 65 minutes each (CDE 2025–26 State Testing Content Area and Time table; Spring 2026 CMAS Test Administrator Manual). In grades 6–8, Unit 1 has a non-calculator Section 1 and a calculator Section 2; Units 2 and 3 are calculator units. Grade 8 uses a scientific calculator. Overall, 72–73% of grade 8 score points sit in calculator sections and 27–28% in non-calculator sections.

Passing Score

CMAS Mathematics and ELA overall scale scores range from 650 to 850 and are reported in five performance levels: Did Not Yet Meet Expectations, Partially Met Expectations, Approached Expectations, Met Expectations, and Exceeded Expectations. Students in Met Expectations and Exceeded Expectations are considered on track relative to the Colorado Academic Standards (CDE CMAS interpretive guides / score reports).

Exam Fee

Free for Colorado public school students; CMAS is a state-required summative assessment administered by districts at no cost to families (CDE Assessment FAQs). (Colorado Department of Education (CDE) with assessment contractor Pearson; delivery via PearsonAccessnext / TestNav)

CMAS Math Grade 8 Exam Content Outline

Large major share

Expressions and Equations / Functions (Major)

Integer exponents, scientific notation, proportional relationships vs linear equations, systems, define/compare/use functions.

Supporting

The Number System

Irrational numbers; approximate irrationals on the number line.

Substantial share

Geometry (Major/supporting)

Congruence and similarity via transformations, Pythagorean Theorem, volume of cylinders/cones/spheres.

Supporting

Statistics and Probability

Bivariate data, scatter plots, linear association.

Subclaim C ~20–22%; Subclaim D ~18%

Mathematical Reasoning & Modeling

Reasoning and modeling; calculator and non-calculator sections.

How to Pass the CMAS Math Grade 8 Exam

What You Need to Know

  • Passing score: CMAS Mathematics and ELA overall scale scores range from 650 to 850 and are reported in five performance levels: Did Not Yet Meet Expectations, Partially Met Expectations, Approached Expectations, Met Expectations, and Exceeded Expectations. Students in Met Expectations and Exceeded Expectations are considered on track relative to the Colorado Academic Standards (CDE CMAS interpretive guides / score reports).
  • Assessment: Question count not published by the exam provider
  • Time limit: About 3 hours 15 minutes of total student testing time across three units of 65 minutes each (CDE 2025–26 State Testing Content Area and Time table; Spring 2026 CMAS Test Administrator Manual). In grades 6–8, Unit 1 has a non-calculator Section 1 and a calculator Section 2; Units 2 and 3 are calculator units. Grade 8 uses a scientific calculator. Overall, 72–73% of grade 8 score points sit in calculator sections and 27–28% in non-calculator sections.
  • Exam fee: Free for Colorado public school students; CMAS is a state-required summative assessment administered by districts at no cost to families (CDE Assessment FAQs).

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

CMAS Math Grade 8 Study Tips from Top Performers

1Use CDE-sanctioned Colorado Practice Resources (coassessments.com) so students learn TestNav tools and item interactions.
2Align review to grade-level Colorado Academic Standards and CMAS frameworks/evidence statements, not only generic worksheets.
3Review wrong answers by reporting category (for example reading subclaim or math major content) to target instruction.
4Use short, frequent practice sessions across the year rather than cramming only in the April window.
5For constructed-response skills, practice evidence selection, planning, and revision even when using MCQ study items.

Frequently Asked Questions

What is the CMAS Mathematics Grade 8 assessment?

Colorado Measures of Academic Success (CMAS) is Colorado's standards-based statewide summative program. The Grade 8 Mathematics form measures mastery of grade-level Colorado Academic Standards and is developed by CDE with Colorado educators and Pearson.

Is CMAS free for students?

Yes. CMAS is administered through Colorado public schools as a state assessment. Families do not pay an exam fee for standard school-based administration (CDE Assessment FAQs).

How long is the official test?

About 3 hours 15 minutes total across three units of 65 minutes each for Mathematics Grades 3–8 (CDE 2025–26 State Testing Content Area and Time table; Spring 2026 unit times). Grades 3–5 are non-calculator for all units; Grades 6–8 Unit 1 has non-calculator and calculator sections, and Units 2–3 are calculator units (Spring 2026 CMAS Overview / Procedures Manual).

What item types appear on the official CMAS?

Official CMAS uses selected-response, technology-enhanced, and often constructed-response or performance/simulation tasks depending on content area. This site offers English four-option MCQ study adaptations only—not an official-format simulation.

How are results reported?

CMAS Mathematics and ELA overall scale scores range from 650 to 850 and are reported in five performance levels: Did Not Yet Meet Expectations, Partially Met Expectations, Approached Expectations, Met Expectations, and Exceeded Expectations. Students in Met Expectations and Exceeded Expectations are considered on track relative to the Colorado Academic Standards (CDE CMAS interpretive guides / score reports).

Are these practice questions official CMAS items?

No. These free practice questions are original study aids aligned to Colorado Academic Standards and CMAS frameworks/blueprints. They are not secure official items and do not replace Colorado Practice Resources, classroom instruction, or the official spring assessment.

Are calculators allowed on CMAS Math?

Grades 3–5 are non-calculator for all units; Grades 6–8 Unit 1 has non-calculator and calculator sections, and Units 2–3 are calculator units (Spring 2026 CMAS Overview / Procedures Manual).