Georgia Milestones Grade 3 Math Practice Tests

Give your third grader the confidence to succeed on the Georgia Milestones Assessment System (GMAS) Mathematics test.

This book contains five full-length practice tests (275 questions total) aligned to Georgia’s K-12 Mathematics Standards (2023 adoption) for Grade 3 and designed to match the format, difficulty, and content of the real GMAS Grade 3 Math exam. (This includes the embedded field-test items that appear on the actual GMAS exam, so each practice test mirrors the true 55-item count and helps your child build real-world test “endurance” for the full sitting.)

What’s inside

• 5 complete 55-item practice tests (275 questions total)
• Format that mirrors test day: a Reference Chart on its own page before every test, multiple-choice plus technology-enhanced item types (multi-select, multi-part Part A/Part B, and typed/keypad responses), and no calculator (matching the real Grade 3 test)
• Detailed answer explanations for every question: not just the correct letter, but step-by-step reasoning that builds real understanding
• Item types, names, and contexts varied across all 5 tests, so students never see the same problem twice in the same slot
• Reporting categories grouped exactly as on the official test: Numerical Reasoning, Patterning & Algebraic Reasoning, Measurement & Data Reasoning, and Geometric & Spatial Reasoning
• A parent letter with test-taking tips and a reference chart for length, liquid volume, mass, and time
• A quick-reference answer key for all five tests for fast scoring

Topics covered

• Place value through 10,000: reading, writing, comparing, ordering, and rounding multi-digit whole numbers
• Rounding to the nearest 10, 100, and 1,000
• Multi-digit addition and subtraction within 10,000 with regrouping
• Two-step and multi-step word problems with whole numbers
• Estimation strategies and mental-math compensation
• Multiplication and division facts within 100
• Equal-groups, arrays, and missing-factor reasoning
• Two-step word problems with multiplication and division
• Fractions with denominators of 2, 3, 4, 6, and 8
• Identifying fractions on a number line and area model
• Equivalent fractions and same-denominator/same-numerator comparisons
• Whole numbers as fractions (3 = 3/1)
• Fraction of a set
• Length to the nearest quarter inch (with ruler tool)
• Liquid volume and mass in real-world problems
• Time to the nearest minute and elapsed time
• Reading bar graphs, picture graphs, and line plots
• Polygon classification: triangles, quadrilaterals, pentagons, hexagons, octagons
• Polygon attributes: parallel and perpendicular segments, right angles, lines of symmetry
• Quadrilateral hierarchy: rectangle, rhombus, square, trapezoid
• Area of rectangles by counting unit squares and by length × width
• Perimeter of rectangles, triangles, regular polygons, and irregular L-shapes
• Same-area-different-perimeter and same-perimeter-different-area reasoning
• Composite-figure area by decomposition

Why parents and teachers choose Smart Stars

• Written by experienced educators who study Georgia’s official GMAS specifications, ALDs, and DRC INSIGHT practice items
• Every question mirrors what students will see on test day: no surprises in format, content, or rigor
• Explanations teach the “why,” not just the “what,” so students learn from every mistake: every explanation includes a Strategy, a Tip, and a Connection that links the skill to the broader Grade 3 standards
• Item types and contexts varied across the five tests: just like a real exam, every question feels fresh
• 18 graphics per test on average (bar graphs, line plots, picture graphs, clocks, rulers, fraction models, polygons, and grids) so students practice with the visual question types they will see on the real GMAS