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Colorado CMAS Grade 6 Math Prep Online Center

Everything Colorado 6th graders need to master the CMAS math test — practice tests, lessons, worksheets, and step-by-step answer explanations.

📋6 full-length practice tests📖Topic lessons & examples📝Printable worksheets📊Instant scoring & feedback💡Step-by-step explanations
Start Colorado CMAS practice →View all 6 Colorado tests →
📐Built for Colorado Grade 6 standards✔️CMAS-style practice🔒No login required🏆Trusted by students across Colorado

Start With a CMAS Practice Test

Six full, timed Colorado CMAS Grade 6 math practice tests — 40 questions each, instant scoring, a topic-by-topic breakdown, and full step-by-step solutions. Each one opens right here in a popup. Calculator: Five-function calculator (on part).

TEST 1New for 2026

CMAS Practice Test 1

A full diagnostic across every Colorado Grade 6 math topic.

  • 📝 40 questions
  • ⏱️ 100 min
  • 🎯 Instant score

Start Test 1 →
TEST 2New for 2026

CMAS Practice Test 2

Fresh questions and problem types to build accuracy.

  • 📝 40 questions
  • ⏱️ 100 min
  • 🎯 Instant score

Start Test 2 →
TEST 3New for 2026

CMAS Practice Test 3

New problems to add speed and confidence on every skill.

  • 📝 40 questions
  • ⏱️ 100 min
  • 🎯 Instant score

Start Test 3 →
TEST 4New for 2026

CMAS Practice Test 4

Another complete, timed exam to build pacing and stamina.

  • 📝 40 questions
  • ⏱️ 100 min
  • 🎯 Instant score

Start Test 4 →
TEST 5New for 2026

CMAS Practice Test 5

A brand-new mixed set to test your readiness.

  • 📝 40 questions
  • ⏱️ 100 min
  • 🎯 Instant score

Start Test 5 →
TEST 6New for 2026

CMAS Practice Test 6

A final full-length simulation to confirm you are ready.

  • 📝 40 questions
  • ⏱️ 100 min
  • 🎯 Instant score

Start Test 6 →

Jump into Colorado Grade 6 Math

📝Practice tests6 timed CMAS tests📄WorksheetsFree printable practice by topic📖LessonsFree step-by-step lessons by topic📐TopicsEvery Grade 6 skill area📕Study guideCMAS Made Ridiculously Simple

Colorado Grade 6 Math Study Tools

A few minutes of quick review — flip through flashcards or scan every key formula. Both open right here.

FLASHCARDS42 cards

Grade 6 Math Flashcards

Key formulas, vocabulary, and concepts. Flip, shuffle, and track what you know.

  • 🧠 42 cards
  • 🔀 Shuffle
  • ✓ Saves progress

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FORMULA REVIEW1 page

Grade 6 Math Formula Review

Every key Grade 6 formula on one page — ratios, percents, geometry, statistics, and more.

  • 📐 6 topic areas
  • ⚡ Quick review

Review Formulas →

Colorado Grade 6 Math Skill Quizzes

Short, focused quizzes — pick one skill, answer 10 questions, get instant scoring and full solutions, then jump to the matching lesson. Each opens right here.

QUIZ10 questions

Ratios, Rates & Proportions

A quick 10-question check on Ratios, Rates & Proportions with instant scoring and step-by-step solutions.

  • 📝 10 questions
  • ⚡ Instant score

Start Quiz →
QUIZ10 questions

Fractions & Decimals

A quick 10-question check on Fractions & Decimals with instant scoring and step-by-step solutions.

  • 📝 10 questions
  • ⚡ Instant score

Start Quiz →
QUIZ10 questions

Integers & the Coordinate Plane

A quick 10-question check on Integers & the Coordinate Plane with instant scoring and step-by-step solutions.

  • 📝 10 questions
  • ⚡ Instant score

Start Quiz →
QUIZ10 questions

Factors, Multiples & Percents

A quick 10-question check on Factors, Multiples & Percents with instant scoring and step-by-step solutions.

  • 📝 10 questions
  • ⚡ Instant score

Start Quiz →
QUIZ10 questions

Expressions, Equations & Inequalities

A quick 10-question check on Expressions, Equations & Inequalities with instant scoring and step-by-step solutions.

  • 📝 10 questions
  • ⚡ Instant score

Start Quiz →
QUIZ10 questions

Geometry: Area, Surface Area & Volume

A quick 10-question check on Geometry: Area, Surface Area & Volume with instant scoring and step-by-step solutions.

  • 📝 10 questions
  • ⚡ Instant score

Start Quiz →
QUIZ10 questions

Statistics & Data

A quick 10-question check on Statistics & Data with instant scoring and step-by-step solutions.

  • 📝 10 questions
  • ⚡ Instant score

Start Quiz →
QUIZ10 questions

Mixed Grade 6 Review

A quick 10-question check on Mixed Grade 6 Review with instant scoring and step-by-step solutions.

  • 📝 10 questions
  • ⚡ Instant score

Start Quiz →

Why trust Effortless Math?

Join students who study with a clearer path

This state grade math hub is part of the Effortless Math library for Colorado CMAS Grade 6 Math Center. We connect lessons, worksheets, practice tests, books, and tools so students can study with a clearer next step.

Last updated: June 3, 2026
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Colorado CMAS Grade 6 Math Snapshot

CMASColorado Measures of Academic Success
6full practice tests
100minute timer each
Five-function calculatorcalculator policy

Colorado Grade 6 Math Topics

Student-friendly Grade 6 math skills connected to the Colorado standards — each tagged with its CMAS standard code and a focused lesson.

CMAS standard codes

Ratios And Proportional Relationships

The Number System — Fractions

The Number System — Decimals

The Number System — Integers And The Coordinate Plane

The Number System — Factors And Multiples

Ratios And Percents

Expressions And Equations

Geometry — Area

Geometry — 3D Figures, Surface Area, And Volume

Statistics

Best Colorado CMAS Grade 6 Math Books

Each book has a job: start from scratch, drill weak skills, or build pacing with full tests. All of them pair with the free tools on this page.

Colorado CMAS Grade 6 Math Made Ridiculously Simple cover
Featured CMAS study guide

Colorado CMAS Grade 6 Math Made Ridiculously Simple

A step-by-step CMAS Grade 6 math book that rebuilds every tested skill clearly and in order — built to match the Colorado standards.

  • Best starting point for the CMAS math test
  • Pairs with Colorado flashcards and worksheets
  • Use it before full timed practice tests
  • Organized for students who need examples before drills
View the bookTry a free practice test first

📘Step-by-step lessons

Short explanations show the move before the student practices it.

✍️Worked examples

Examples translate CMAS-style wording into clear math steps.

🎯Targeted practice

Rebuild one skill at a time instead of jumping around.

🌉Test-day bridge

After each topic, connect to formulas, flashcards, and practice questions.

🗺️How to use it

  • Read one lesson and copy the worked example.
  • Do a short worksheet set on the same topic.
  • Review the matching flashcards or formulas.
  • Try a mixed quiz and mark every miss.

🔗Pair it with free tools

Choose the right Colorado Grade 6 math book

Colorado CMAS Grade 6 Math Made Ridiculously Simple
Best study guide

Colorado CMAS Grade 6 Math Made Ridiculously Simple

Start here to rebuild CMAS math from the ground up.

Colorado CMAS Grade 6 Math Preparation Bundle
Best value

Colorado CMAS Grade 6 Math Preparation Bundle

The full prep library — study guide, workbook, and practice tests together.

7 Colorado CMAS Grade 6 Math Practice Tests
Best timed practice

7 Colorado CMAS Grade 6 Math Practice Tests

Use after topic review to build pacing and test stamina.

Colorado Grade 6 Math Standards

The official Colorado Grade 6 math standards, grouped by domain with the exact code and description for each expectation.

6.1

  • 6.1Number and Quantity

6.RP · Ratios & Proportional Relationships

  • 6.RP.A.1Apply the concept of a ratio and use ratio language to describe a ratio relationship between two quantities
  • 6.RP.A.2Apply the concept of a unit ratea/bassociated with a ratioa:bwithb≠ 0, and use rate language in the context of a ratio relationship
  • 6.RP.A.3Use ratio and rate reasoning to solve real-world and mathematical problems, e.g., by reasoning about tables of equivalent ratios, tape diagrams, double number line diagrams, or equations

6.NS · The Number System

  • 6.NS.A.1Interpret and compute quotients of fractions, and solve word problems involving division of fractions by fractions, e.g., by using visual fraction models and equations to represent the problem
  • 6.NS.B.2Fluently divide multi-digit numbers using the standard algorithm
  • 6.NS.B.3Fluently add, subtract, multiply, and divide multi-digit decimals using the standard algorithm for each operation
  • 6.NS.B.4Find the greatest common factor of two whole numbers less than or equal to 100 and the least common multiple of two whole numbers less than or equal to 12. Use the distributive property to express a sum of two whole numbers 1-100 with a common factor as a multiple of a sum of two whole numbers with no common factor
  • 6.NS.C.5Explain why positive and negative numbers are used together to describe quantities having opposite directions or values (e.g., temperature above/below zero, elevation above/below sea level, credits/debits, positive/negative electric charge); use positive and negative numbers to represent quantities in real-world contexts, explaining the meaning of 0 in each situation
  • 6.NS.C.6Describe a rational number as a point on the number line. Extend number line diagrams and coordinate axes familiar from previous grades to represent points on the line and in the plane with negative number coordinates
  • 6.NS.C.7Order and find absolute value of rational numbers
  • 6.NS.C.8Solve real-world and mathematical problems by graphing points in all four quadrants of the coordinate plane. Include use of coordinates and absolute value to find distances between points with the same first coordinate or the same second coordinate

6.2

  • 6.2Algebra and Functions

6.EE · Expressions & Equations

  • 6.EE.A.1Write and evaluate numerical expressions involving whole-number exponents
  • 6.EE.A.2Write, read, and evaluate expressions in which letters stand for numbers
  • 6.EE.A.3Apply the properties of operations to generate equivalent expressions
  • 6.EE.A.4Identify when two expressions are equivalent (i.e., when the two expressions name the same number regardless of which value is substituted into them)
  • 6.EE.B.5Describe solving an equation or inequality as a process of answering a question: Which values from a specified set, if any, make the equation or inequality true? Use substitution to determine whether a given number in a specified set makes an equation or inequality true
  • 6.EE.B.6Use variables to represent numbers and write expressions when solving a real-world or mathematical problem; recognize that a variable can represent an unknown number, or, depending on the purpose at hand, any number in a specified set
  • 6.EE.B.7Solve real-world and mathematical problems by writing and solving equations of the formx±p=qandpx=qfor cases in whichp,qandxare all nonnegative rational numbers
  • 6.EE.B.8Write an inequality of the formx>c,x≥c,x<c, orx≤cto represent a constraint or condition in a real-world or mathematical problem. Show that inequalities of the formx>c,x≥c,x<c, orx≤chave infinitely many solutions; represent solutions of such inequalities on number line diagrams
  • 6.EE.C.9Use variables to represent two quantities in a real-world problem that change in relationship to one another; write an equation to express one quantity, thought of as the dependent variable, in terms of the other quantity, thought of as the independent variable. Analyze the relationship between the dependent and independent variables using graphs and tables, and relate these to the equation

6.3

  • 6.3Data, Statistics, and Probability

6.SP · Statistics & Probability

  • 6.SP.A.1Identify a statistical question as one that anticipates variability in the data related to the question and accounts for it in the answers
  • 6.SP.A.2Demonstrate that a set of data collected to answer a statistical question has a distribution that can be described by its center, spread, and overall shape
  • 6.SP.A.3Explain that a measure of center for a numerical data set summarizes all of its values with a single number, while a measure of variation describes how its values vary with a single number
  • 6.SP.B.4Display numerical data in plots on a number line, including dot plots, histograms, and box plots
  • 6.SP.B.5Summarize numerical data sets in relation to their context, such as by:

6.4

  • 6.4Geometry

6.G · Geometry

  • 6.G.A.1Find the area of right triangles, other triangles, special quadrilaterals, and polygons by composing into rectangles or decomposing into triangles and other shapes; apply these techniques in the context of solving real-world and mathematical problems
  • 6.G.A.2Find the volume of a right rectangular prism with fractional edge lengths by packing it with unit cubes of the appropriate unit fraction edge lengths, and show that the volume is the same as would be found by multiplying the edge lengths of the prism. Apply the formulasV=lwhandV=bhto find volumes of right rectangular prisms with fractional edge lengths in the context of solving real-world and mathematical problems
  • 6.G.A.3Draw polygons in the coordinate plane given coordinates for the vertices; use coordinates to find the length of a side joining points with the same first coordinate or the same second coordinate. Apply these techniques in the context of solving real-world and mathematical problems
  • 6.G.A.4Represent three-dimensional figures using nets made up of rectangles and triangles, and use the nets to find the surface area of these figures. Apply these techniques in the context of solving real-world and mathematical problems

Standards: Colorado Academic Standards. Official source ↗

Colorado CMAS Grade 6 Math FAQ

What is the CMAS Grade 6 math test?

The CMAS (Colorado Measures of Academic Success) is Colorado's Grade 6 mathematics assessment. These free practice tests mirror its format with 40 questions and full solutions.

Can I use a calculator?

Unit 1 has a non-calculator section then a calculator section; Units 2-3 allow a five-function calculator (square-root/percent).

How long is each practice test?

Each test has a 100-minute timer and auto-submits at 0:00, then shows your score, a topic breakdown, and step-by-step solutions.

Is it free?

Yes — all six tests, lessons, and worksheets are free with no login. The study guide and bundle are optional next steps.

Grade 6 Math in Other States

Explore Grade 6 math standards, practice tests, and worksheets for every state.

Make This Your Colorado CMAS Starting Point

Take a timed practice test, find your weakest topic, and study it with the linked lessons, worksheets, and the CMAS study guide.

Start a practice test

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