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MCAS Grade 8 Math Practice

See the Grade 8 content, tools, practice formats, and official context before choosing a practice mode.

Read the questions. Check the reasoning.

Grade 8 MCAS Math practice questions with answers

These three original examples come from TestByState’s Grade 8 practice generator. Read them without an account. They illustrate selected skills, not a complete test blueprint or official released questions.

Example 1

Skill reference: 8.EE.A.3

Express 48000 as a number from 1 through 9 multiplied by a power of 10.

  1. 4.8 × 10³
  2. 5.8 × 10⁴
  3. 4.8 × 10⁴
  4. 4.8 × 10⁻⁴
Show answer and explanation

Answer: 4.8 × 10⁴

The decimal moves 4 places, giving 4.8 × 10⁴.

  1. Place the decimal so the coefficient is at least 1 and less than 10.
  2. The decimal moves 4 places, giving 4.8 × 10⁴.

Example 2

Skill reference: 8.EE.A.2

Which statement gives all solutions of x² = 121?

  1. x = −11
  2. x = −11 or x = 11
  3. x = −121 or x = 121
  4. x = 11
Show answer and explanation

Answer: x = −11 or x = 11

Therefore the solutions are −11 and 11.

  1. Both 11² and (−11)² equal 121.
  2. Therefore the solutions are −11 and 11.

Example 3

Skill reference: 8.G.C.9

Find the volume of a cylinder with radius 7 units and height 8 units. Use 3.14 for π.

  1. 615.44 cubic units
  2. 1176 cubic units
  3. 1230.88 cubic units
  4. 2461.76 cubic units
Show answer and explanation

Answer: 1230.88 cubic units

Substitute the dimensions and use 3.14 for π to get 1230.88 cubic units.

  1. Use V = πr²h.
  2. Substitute the dimensions and use 3.14 for π to get 1230.88 cubic units.

Can I practice Grade 8 MCAS Math online?

Yes. TestByState offers Grade 8 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 8 topics and official resources · App features, question counts, and paper comparison

Grade 8 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.

Session 1 is modeled without a calculator and Session 2 with a calculator; an official reference sheet is available.

Grade 8 reporting categories

  • Number System & Expressions
  • Functions
  • Geometry
  • Statistics & Probability

Topic Practice

  • Number System & Expressions
  • Functions
  • Geometry
  • Statistics & Probability

Practice response formats

multiple choice, integer entry, ordered-pair entry, multiple select.

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

  • 8.NS.A.1
  • 8.NS.A.2
  • 8.EE.A.1
  • 8.EE.A.2
  • 8.EE.A.3
  • 8.EE.A.4
  • 8.EE.B.5
  • 8.EE.B.6
  • 8.EE.C.7
  • 8.EE.C.8
  • 8.F.A.1
  • 8.F.A.2
  • 8.F.A.3
  • 8.F.B.4
  • 8.F.B.5
  • 8.G.A.1
  • 8.G.A.2
  • 8.G.A.3
  • 8.G.A.4
  • 8.G.A.5
  • 8.G.B.6
  • 8.G.B.7
  • 8.G.B.8
  • 8.G.C.9
  • 8.SP.A.1
  • 8.SP.A.2
  • 8.SP.A.3
  • 8.SP.A.4

Back to the MCAS Math guide · Official resources

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