About this book
Built to feel like test day: Written to teach the why behind every answer.
This book gives your third grader five full-length practice tests for the Colorado Measures of Academic Success (CMAS) Grade 3 Mathematics exam — 300 items in all, written and reviewed by educators and aligned line-for-line to the Colorado Academic Standards for Mathematics.
Take a look inside
Every test in this book mirrors what your child will actually see on CMAS test day: the same three-unit structure with clear STOP markers between units, the same no-calculator rule across the entire test, no reference sheet (just like the real Grade 3 CMAS), and the same item formats students encounter on Pearson’s TestNav platform — multiple-choice, multi-select (“select TWO” or “select ALL”), fill-in-the-blank equation-builder items, and multi-part constructed-response items.
About the question count, and why field-test items matter.
- Length: on the official CMAS Grade 3 Math, roughly 32 items count toward your student’s score, worth about 50–51 points, because some constructed-response items earn 2 or 3 points.
- Field-test items: the real test also includes embedded field-test items that the Colorado Department of Education (CDE) uses to develop future exams. Students never know which items count and which are field-test, so on test day every question must be worked with full focus and full energy.
- Each practice test here: the full operational scored load plus embedded unmarked field-test items — exactly mirroring the real on-screen experience — so your child builds the realistic endurance CMAS demands across three back-to-back units.
What’s inside
- 5 complete 60-item practice tests (300 items total) — operational scored items plus embedded unmarked field-test items, exactly like the live CMAS
- Three-unit structure with clear STOP markers between units — matching the real ~65-minute-per-unit CMAS Grade 3 Math format
- A printed Mathematics Reference Chart before each test (time, length, mass, liquid volume, and money conversions) — placed on its own page so students learn to look there instead of inside the questions
- Step-by-step answer explanations for every question, teaching the *why* behind every correct answer — not just the letter
- Item types, names, contexts, and slot positions varied across all 5 tests, so no two tests feel the same and no student can game the layout
- A parent letter with the materials list (pencil, scratch paper, ruler), test-taking tips for Grade 3 CMAS Math, and a guide to pacing the five tests over several weeks
- A quick-reference answer key for the full 300-item book
Topics covered
- Multiplication and division within 100; meanings of multiplication and division
- Properties of operations (commutative, associative, distributive) as strategy
- Addition and subtraction within 1,000 with regrouping
- Place value through 1,000; rounding to the nearest 10 and nearest 100
- Multiplying one-digit numbers by multiples of 10 (e.g., 7 × 40)
- Fractions with denominators 2, 3, 4, 6, and 8 — modeling, comparing, equivalence, and placement on a number line
- Whole numbers expressed as fractions (e.g., 3 = 3/1)
- Telling time to the nearest minute and elapsed-time problems (within an hour and crossing the hour)
- Measuring and estimating liquid volumes and masses (grams, kilograms, liters, milliliters)
- One-step and two-step word problems with all four operations
- Area of rectangles by tiling and by multiplication (products through 10 × 10); composite area of L-shapes
- Perimeter of polygons, including finding an unknown side length
- Picture graphs, bar graphs (scaled), and line plots with halves and quarters of an inch
- Classifying quadrilaterals (square, rectangle, rhombus, parallelogram); partitioning shapes into equal parts as a fraction of the whole
- Identifying and extending arithmetic patterns
Why parents and teachers choose Smart Stars
- Written and reviewed by educators with deep classroom and university teaching experience — not generic test-prep authors
- Every question mirrors what students actually see on the CMAS: We study CDE’s released items, scoring guides, and the Colorado Academic Standards for every grade and subject we publish — so there are no surprises on test day
- The deepest answer explanations in third-grade test prep: Every explanation teaches reasoning, not just the letter — because students who understand *why* an answer is correct keep that skill long after the test
- Item types, contexts, and slot positions varied across the five tests, so every test feels fresh — exactly like the real exam
- Field-test items are built in (unmarked, exactly like the real CMAS), giving students true test-day endurance from the first practice session
