Give your third grader the confidence to succeed on the Idaho ISAT Grade 3 Math test.
This Smart Stars practice book provides five full-length, Smarter-Balanced-aligned practice tests, each with 26 items that mirror the on-screen length and item mix of the real Idaho Standards Achievement Test (ISAT) in Mathematics. Every question was written by experienced educators, reviewed for accuracy, and built around the Idaho Content Standards for Mathematics at Grade 3 (the state’s Common Core-aligned standards).
The ISAT Math test for Grade 3 is delivered online through Cambium Assessment in two untimed parts: a Computer Adaptive Test (CAT) portion followed by a Performance Task (PT): a single real-world scenario that includes hand-scored short-response items. Idaho uses the shortened (“adjusted”) Smarter Balanced blueprint at Grade 3. Each practice test here uses a 26-item structure: 21 CAT items plus a 5-item Performance Task: to mirror the true on-screen length (the scored items a student sees, plus the embedded field-test items the test quietly includes) and build real test-day endurance.
What’s inside
- Five full-length practice tests of 26 items each, with detailed Answers and Explanations after every test
- Coverage of every Grade 3 math standard across the three ISAT reporting categories: Concepts and Procedures; Problem Solving and Modeling & Data Analysis (Smarter Balanced Claims 2 and 4 combined for reporting); and Communicating Reasoning
- A unique Performance Task in every test, modeled on the real exam, with sample 2-point responses and scoring notes
- Every explanation includes a labeled Strategy and Tip so students learn the underlying reasoning, not just the answer
- A combined Quick Answer Key at the back of the book for fast self-grading
- A parent letter and a test-taking tips section to help families prepare
- No-calculator practice throughout, matching the official ISAT Grade 3 policy (Smarter Balanced math first allows an embedded calculator at Grade 6, not Grade 3)
Topics covered
- Place value, and rounding to the nearest ten and hundred
- Addition and subtraction within 1,000, including problems that regroup across zeros
- Multiplication and division within 100, fact families, and unknown factors
- Multistep word problems using all four operations
- Multiplicative comparison (“times as many”)
- Arithmetic and number patterns, including growing patterns
- Fractions as numbers on a number line
- Equivalent fractions, and comparing and ordering fractions (denominators 2, 3, 4, 6, and 8)
- Whole numbers written as fractions
- Telling time and finding elapsed time to the minute
- Measuring and reasoning about liquid volumes and masses (liters, grams, kilograms)
- Area of rectangles and area of composite (rectilinear) figures
- Perimeter of polygons, including finding an unknown side length
- Scaled picture graphs, bar graphs, and line plots
- Classifying quadrilaterals (square, rectangle, rhombus) 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 ISAT structure, item mix, and policy (no calculator and no reference sheet at Grade 3).
- Explanations teach the why. Every Answers and Explanations entry walks through the reasoning step by step, then provides a labeled Strategy and Tip 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.
- Field-test items built in. Each practice test includes unscored items that mirror the real field-test load on the live ISAT, building true test-day endurance.