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MCAS Grade 3 Math Practice

See the Grade 3 content, tools, practice formats, and official context before choosing a practice mode.

Read the questions. Check the reasoning.

Grade 3 MCAS Math practice questions with answers

These three original examples come from TestByState’s Grade 3 practice generator. Read them without an account. They illustrate selected skills, not a complete test blueprint or official released questions.

Example 1

Skill reference: 3.NBT.A.2

A class collected 551 cans and recycled 44 of them. How many cans are left to recycle?

  1. 517
  2. 595
  3. 507
  4. 497
Show answer and explanation

Answer: 507

551 − 44 = 507.

  1. Begin with 551 and take away 44.
  2. 551 − 44 = 507.

Example 2

Skill reference: 3.NBT.A.1

What is 694 rounded to the nearest ten?

  1. 694
  2. 680
  3. 690
  4. 700
Show answer and explanation

Answer: 690

Because 4 is less than 5, round down to 690.

  1. The digit immediately to the right of the tens place is 4.
  2. Because 4 is less than 5, round down to 690.

Example 3

Skill reference: 3.MD.A.2

A tank has 17 liters of water. A student adds 4 liters. How much water is in the tank now?

  1. 4 liters
  2. 22 liters
  3. 13 liters
  4. 21 liters
Show answer and explanation

Answer: 21 liters

17 liters + 4 liters = 21 liters.

  1. Combine the two liquid volumes by adding.
  2. 17 liters + 4 liters = 21 liters.

Can I practice Grade 3 MCAS Math online?

Yes. TestByState offers Grade 3 MCAS Math practice in a web browser and in its iPhone and iPad app. The free web preview includes three interactive questions. A subscription unlocks saved practice and parent progress.

What does the paid practice include?

Daily Practice (10 questions), Full Test (40 questions). Parents can review completed answers and explanations to choose what to practice next. Practice scores are not official state scores.

Grade 3 topics and official resources · App features, question counts, and paper comparison

Grade 3 timing and tools

The 2027 Grades 3–8 Mathematics window is April 26–May 21. Grade 10 Mathematics has recommended session dates of May 18 and May 19 within a May 18–26 administration window.

The TestByState and current MCAS model is non-calculator in both sessions.

Grade 3 reporting categories

  • Place Value & Operations
  • Operations & Algebraic Thinking
  • Fractions
  • Measurement & Data
  • Geometry

Topic Practice

  • Place Value & Operations
  • Operations & Algebraic Thinking
  • Fractions
  • Measurement & Data

Practice response formats

multiple choice, numeric entry.

Practice forms

  • Daily Practice: 10 TestByState questions
  • Full Test: 40 TestByState questions

These are product form counts, not official operational item-count claims.

Standards represented in this grade pack

  • 3.OA.A.1
  • 3.OA.A.2
  • 3.OA.B.6
  • 3.OA.D.8
  • 3.NBT.A.1
  • 3.NBT.A.2
  • 3.NF.A.1
  • 3.NF.A.3
  • 3.MD.A.1
  • 3.MD.A.2
  • 3.MD.C.7
  • 3.MD.D.8
  • 3.G.A.1

Back to the MCAS Math guide · Official resources

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