The Georgia Milestones Assessment System (GMAS) Grade 3 math End-of-Grade (EOG) test is the first statewide assessment Georgia students take in mathematics. It tests whether students have mastered the Grade 3 Georgia Standards of Excellence (GSE) for math — standards that are based on the Common Core State Standards with Georgia-specific modifications. Understanding what is tested, at what depth, and in what format helps families and teachers focus preparation on what will actually matter on test day.
ViewMath is not affiliated with or endorsed by the Georgia Department of Education. For official Georgia Milestones information, visit gadoe.org.
What Is the Georgia Milestones Grade 3 Math EOG?
The Georgia Milestones Grade 3 math assessment is a summative End-of-Grade test administered in the spring. It includes selected-response (multiple-choice), constructed-response, and extended-response questions. Students answer questions that cover the full range of Grade 3 math GSE, with most weight on the major work of the grade.
Performance levels are reported as: Beginning Learner, Developing Learner, Proficient Learner, and Distinguished Learner. The Proficient level indicates on-grade-level mastery.
Grade 3 Georgia Milestones Math: Top Tested Domains
Operations and Algebraic Thinking (Multiplication and Division)
This is the most tested area in Grade 3. The GSE expects students to understand multiplication as equal groups, arrays, and repeated addition, and to interpret division as sharing and grouping. Students must know multiplication facts through 10 × 10 and use the properties of multiplication (commutative, associative, distributive) to solve problems efficiently. Multi-step word problems that embed multiplication and division within real-world contexts appear frequently.
Number and Operations in Base Ten
Students work with numbers up to 10,000: reading and writing them in standard, expanded, and word form; understanding place value to the thousands; rounding to the nearest 10 and 100; and using place value understanding to add and subtract fluently within 1,000.
Number and Operations: Fractions
Third grade introduces fractions as numbers on a number line. Students partition shapes and number lines into equal parts, identify and write unit fractions (1/b) and other fractions (a/b), locate fractions on a number line, compare fractions with the same numerator or the same denominator, and identify equivalent fractions using visual models. This domain often produces the most errors — students need to understand that the denominator names the size of each part.
Measurement and Data
Students tell time to the nearest minute, solve problems involving time intervals (elapsed time), measure lengths to the nearest half inch and quarter inch, and solve liquid volume and mass problems involving metric units. They also collect data, create scaled bar graphs and pictographs, and answer multi-step questions about the data. Area and perimeter appear here as well: students use A = l × w for rectangles, and find perimeter by adding side lengths.
Geometry
Students categorize quadrilaterals by their properties (parallel sides, right angles), partition rectangles into rows and columns of same-size squares, and relate area to multiplication. Geometry carries less test weight than Operations and Fractions but still appears on every assessment.
Georgia Milestones Grade 3 Sample Problems
Multiplication and Division
1. There are 7 rows of chairs in the school auditorium and 8 chairs in each row. How many chairs are there in total? Write a multiplication equation and solve.
7 × 8 = 56 chairs.
2. Mr. James has 48 pencils. He wants to put an equal number of pencils in each of 6 boxes. How many pencils should he put in each box?
48 ÷ 6 = 8 pencils per box.
3. Use the distributive property to find 7 × 8: break 8 into 5 + 3 and show your work.
7 × (5 + 3) = (7 × 5) + (7 × 3) = 35 + 21 = 56.
Fractions on a Number Line
4. Plot 3/4 and 1/2 on a number line from 0 to 1. Which is greater?
3/4 = 0.75 and 1/2 = 0.50. 3/4 is greater.
5. A ribbon is divided into 6 equal parts. Kayla colors 4 parts. What fraction of the ribbon is colored? What fraction is not colored?
4/6 is colored. 2/6 is not colored.
Area and Perimeter
6. A classroom is 9 meters long and 6 meters wide. What is the area? What is the perimeter?
Area = 9 × 6 = 54 sq m. Perimeter = 2(9 + 6) = 30 m.
7. A rug has an area of 35 square feet and a length of 7 feet. What is the width?
35 ÷ 7 = 5 feet.
Measurement
8. School starts at 8:15 AM and ends at 3:05 PM. How long is the school day?
From 8:15 to 3:05 = 6 hours 50 minutes.
Common Georgia Milestones Grade 3 Math Mistakes
- Multiplying the wrong numbers in word problems: Students sometimes add instead of multiply when the problem uses language like “each” or “every.” Reading the problem twice — once for understanding, once for the operation — helps.
- Fraction comparisons without the same whole: Fractions can only be compared when they refer to the same-sized whole. Students who say “4/6 is bigger than 3/6 because 4 is bigger than 3” are correct — but only because the denominators match. Build this reasoning explicitly.
- Confusing area and perimeter: Area is the space inside (square units); perimeter is the distance around (linear units). Color-coding the interior vs. the border of a rectangle is an effective visual anchor.
- Elapsed time errors: Students who try to subtract clock times directly often make errors around the hour mark. Teaching students to count forward in chunks — from start time to the next full hour, then from the hour to the end time — reduces errors significantly.
3-Week Georgia Milestones Grade 3 Math Prep Plan
Week 1: Multiplication, Division, and Fact Fluency
Build multiplication fact fluency through 10 × 10 using flashcards, skip-counting, and timed quizzes. Apply facts to equal groups, array, and sharing word problems. End the week with a 10-question mixed word problem quiz.
Week 2: Fractions, Place Value, and Rounding
Use fraction bars and number lines to build conceptual understanding of fractions. Practice comparing fractions with the same denominator and same numerator. Then work on place value through thousands: reading, writing, and rounding to nearest 10 and 100.
Week 3: Measurement, Geometry, and Mixed Practice
Practice area, perimeter, elapsed time, and reading scaled bar graphs. End with a full 20-question mixed practice test. Review every missed problem and identify whether the error was a concept issue or a reading error.
Georgia Grade 3 Math Resources
ViewMath offers Grade 3 math workbooks, study guides, and practice test books designed around the major work of Grade 3 standards. Browse the full Grade 3 catalog using the sidebar.
ViewMath is an independent publisher. Our books are not official Georgia Milestones materials and are not produced by or affiliated with the Georgia Department of Education.
