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Colorado CMAS · Math · Grade 3

Colorado CMAS Grade 3 Math Practice Test

Build Grade 3 Math readiness with five focused 10-question practice sets covering numbers, operations, multiplication, fractions, measurement, data, and geometry.

Grade 3 Math practice sets

This Colorado CMAS Grade 3 Math Practice Test page provides five short practice sets with 10 original multiple-choice questions each. The sets offer supplemental practice across place value, operations, multiplication, division, fractions, measurement, data, area, and geometry.

Math skills covered

  • Place value, comparing numbers, expanded form, rounding, number order, and notation
  • Addition, subtraction, estimation, equations, one-step problems, and two-step problem solving
  • Multiplication facts, division facts, arrays, equal groups, repeated addition, sharing, properties, and patterns
  • Fractions, measurement, time, picture graphs, line plots, capacity, perimeter, and money
  • Polygons, quadrilaterals, area, right angles, shape attributes, models, and inverse operations

How to use this page

Complete one 10-question set at a time. Identify the operation or model, solve carefully, and review every explanation before moving to the next set.

This is supplemental State Test Practice, State Assessment Practice, and Standardized Test Practice. It does not replace current Colorado Department of Education guidance, official CMAS blueprints, accommodations, or testing policies.

For the Colorado assessment hub, visit Colorado State Assessments.

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Colorado CMAS Grade 3 Math Practice Questions

A 10-question Colorado CMAS Grade 3 Math practice set on fractions, measurement, and data, with answers and explanations.

Read each math task carefully, choose one answer, and review the explanation after responding.

10 Questions
0/10 Questions0 %
Correct 0
Incorrect 0
Unanswered 10
1. QuestionMultiple choice

A rectangle is divided into 4 equal parts. Three parts are shaded. What fraction is shaded?

Please select an answer first.

Correct answer: A

The correct answer is 3/4.

  1. Read the math task: Identify the quantities, operation, shape, measurement, or data relationship in the question.
  2. Show the reasoning: Three of four equal parts are shaded, so the fraction is 3/4.
  3. Check the answer: Choose the option that matches the calculation or mathematical model.

Three of four equal parts are shaded, so the fraction is 3/4.

2. QuestionMultiple choice

Which fraction is equal to one whole?

Please select an answer first.

Correct answer: B

The correct answer is 4/4.

  1. Read the math task: Identify the quantities, operation, shape, measurement, or data relationship in the question.
  2. Show the reasoning: Four fourths make one complete whole.
  3. Check the answer: Choose the option that matches the calculation or mathematical model.

Four fourths make one complete whole.

3. QuestionMultiple choice

Which fraction is greater?

Please select an answer first.

Correct answer: C

The correct answer is 3/6.

  1. Read the math task: Identify the quantities, operation, shape, measurement, or data relationship in the question.
  2. Show the reasoning: With the same denominator, 3 sixths is greater than 2, 1, or 0 sixths.
  3. Check the answer: Choose the option that matches the calculation or mathematical model.

With the same denominator, 3 sixths is greater than 2, 1, or 0 sixths.

4. QuestionMultiple choice

A pencil is 15 centimeters long. A crayon is 9 centimeters long. How much longer is the pencil?

Please select an answer first.

Correct answer: D

The correct answer is 6 centimeters.

  1. Read the math task: Identify the quantities, operation, shape, measurement, or data relationship in the question.
  2. Show the reasoning: Subtract 9 from 15 to find a difference of 6 centimeters.
  3. Check the answer: Choose the option that matches the calculation or mathematical model.

Subtract 9 from 15 to find a difference of 6 centimeters.

5. QuestionMultiple choice

How many minutes are in 2 hours?

Please select an answer first.

Correct answer: A

The correct answer is 120 minutes.

  1. Read the math task: Identify the quantities, operation, shape, measurement, or data relationship in the question.
  2. Show the reasoning: Each hour has 60 minutes, so 2 × 60 = 120 minutes.
  3. Check the answer: Choose the option that matches the calculation or mathematical model.

Each hour has 60 minutes, so 2 × 60 = 120 minutes.

6. QuestionMultiple choice

A picture graph shows 1 symbol for 4 students. If 5 symbols are shown, how many students are represented?

Please select an answer first.

Correct answer: B

The correct answer is 20.

  1. Read the math task: Identify the quantities, operation, shape, measurement, or data relationship in the question.
  2. Show the reasoning: Five groups of four represent 5 × 4 = 20 students.
  3. Check the answer: Choose the option that matches the calculation or mathematical model.

Five groups of four represent 5 × 4 = 20 students.

7. QuestionMultiple choice

Which unit is best for measuring the amount of water in a bathtub?

Please select an answer first.

Correct answer: C

The correct answer is Gallons.

  1. Read the math task: Identify the quantities, operation, shape, measurement, or data relationship in the question.
  2. Show the reasoning: Gallons measure liquid capacity and fit a bathtub.
  3. Check the answer: Choose the option that matches the calculation or mathematical model.

Gallons measure liquid capacity and fit a bathtub.

8. QuestionMultiple choice

What is the perimeter of a rectangle with sides 6 meters and 3 meters?

Please select an answer first.

Correct answer: D

The correct answer is 18 meters.

  1. Read the math task: Identify the quantities, operation, shape, measurement, or data relationship in the question.
  2. Show the reasoning: Add all sides: 6 + 3 + 6 + 3 = 18 meters.
  3. Check the answer: Choose the option that matches the calculation or mathematical model.

Add all sides: 6 + 3 + 6 + 3 = 18 meters.

9. QuestionMultiple choice

A line plot shows three points at 2 inches and two points at 3 inches. How many measurements are shown?

Please select an answer first.

Correct answer: A

The correct answer is 5.

  1. Read the math task: Identify the quantities, operation, shape, measurement, or data relationship in the question.
  2. Show the reasoning: Add the points: 3 + 2 = 5 measurements.
  3. Check the answer: Choose the option that matches the calculation or mathematical model.

Add the points: 3 + 2 = 5 measurements.

10. QuestionMultiple choice

Which amount is the same as 2 dollars and 35 cents?

Please select an answer first.

Correct answer: B

The correct answer is 2 dollars and 35 cents.

  1. Read the math task: Identify the quantities, operation, shape, measurement, or data relationship in the question.
  2. Show the reasoning: Two dollars and thirty-five cents is written as 2 dollars and 35 cents.
  3. Check the answer: Choose the option that matches the calculation or mathematical model.

Two dollars and thirty-five cents is written as 2 dollars and 35 cents.

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Frequently asked questions about Colorado CMAS Grade 3 Math Practice Test

Which Grade 3 Math skills are covered?

The page covers place value, operations, multiplication, division, fractions, measurement, data, area, geometry, and mathematical reasoning.

How many questions are included?

There are five practice sets with 10 questions each, for 50 questions in total. Each set can be completed separately.

Are these official CMAS questions?

No. These are original supplemental practice questions. Check the latest Colorado Department of Education information for official materials, standards, accommodations, and policies.