Give your third grader the confidence to succeed on the Oregon OSAS Grade 3 Math test.
This Smart Stars practice book provides five full-length, standards-aligned practice tests that mirror the on-screen length and item mix of the real Oregon Statewide Assessment System (OSAS) Mathematics test. Every question was written by experienced educators, reviewed for accuracy, and built around the 2021 Oregon Mathematics Standards for Grade 3.
The OSAS Math test for Grade 3 is built with the Smarter Balanced Assessment Consortium and delivered online through the OSAS Portal as an untimed test in two parts: a computer-adaptive section and a Performance Task. It mixes multiple-choice, multiple-select, and type-in items, and it includes Oregon’s new Data Reasoning content: reading and interpreting scaled picture graphs and bar graphs. At Grade 3 there is no calculator (calculators begin in Grade 6) and no reference sheet. Each practice test here uses a 23-25 item structure: a computer-adaptive-style section of about 19 items plus a 4-6 item Performance Task: to mirror the true on-screen length and build real test-day endurance.
What’s inside
- Five full-length practice tests, with detailed Answers and Explanations after every test
- A Performance Task on every test, built around a real-world set of data, just like the real OSAS exam
- Coverage of every Grade 3 math standard across the OSAS reporting claims: Concepts and Procedures; Problem Solving; Communicating Reasoning; and Modeling and Data Analysis
- Practice in every OSAS item format: multiple choice, multiple select, type-in answers, True/False and Yes/No matching tables, number lines, picture graphs, bar graphs, and figure-based questions
- Every explanation gives a full worked solution plus a labeled Strategy and a Tip, Check, or Estimate, so students learn the reasoning, not just the answer
- A Grade 3 Math Study Reference Sheet to learn and review between tests (the state does not provide one on test day)
- A combined Quick Answer Key at the back of the book for fast self-grading
- A family letter and a test-taking tips section
- No-calculator, no-reference-sheet practice throughout, matching the official OSAS Grade 3 policy
Topics covered
- Place value to thousands, and reading and writing whole numbers within 1,000
- Rounding whole numbers to the nearest ten and hundred
- Addition and subtraction within 1,000, including regrouping
- Multiplication and division within 100, using equal groups, arrays, and area
- Multiplying one-digit numbers by multiples of ten
- The relationship between multiplication and division, including unknown-factor problems
- Two-step word problems using the four operations, interpreting remainders, and judging whether an answer is reasonable
- Number and shape patterns, arithmetic rules, and input-output (function) tables
- Fractions as numbers: unit fractions and locating fractions on a number line
- Equivalent fractions, comparing and ordering fractions, and finding a fraction between two fractions
- Telling time to the nearest minute and finding elapsed time
- Liquid volume and mass in grams, kilograms, and liters
- Area and perimeter, including composite (L-shaped) figures, finding a missing side, and comparing two areas
- Data Reasoning: reading scaled picture graphs and bar graphs, and choosing the questions a graph can answer
- Classifying quadrilaterals, and partitioning shapes into equal parts
Why parents and teachers choose Smart Stars
- Educator-authored. Every question is written and reviewed by classroom-experienced educators.
- Mirrors test day. Each practice test matches the official OSAS format, two-part structure (computer-adaptive section plus Performance Task), item mix, and policy (no calculator and no reference sheet at Grade 3).
- Built for Oregon. Aligned to the 2021 Oregon Mathematics Standards, including the new Data Reasoning strand and a Performance Task on every test.
- Explanations teach the why. Every Answers and Explanations entry gives a full worked solution, then a labeled Strategy and a Tip, Check, or Estimate so students learn the move, not just the answer.
- Varied across five tests. Slot positions, contexts, names, and number choices rotate test-to-test, and the tests step up in difficulty so no two feel like the same practice run.