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California CAASPP · Grade 8 · Math

California Grade 8 CAASPP Math Practice Test

Build Grade 8 California CAASPP Math readiness with five focused 10-question practice sets covering number systems, algebra, functions, geometry, statistics, probability, and modeling.

Grade 8 CAASPP Math practice sets

This California Grade 8 CAASPP Math Practice Test page provides five short practice sets with 10 original multiple-choice questions each. The sets support supplemental review across proportional relationships, rational and irrational numbers, expressions, equations, functions, geometry, statistics, probability, and mathematical modeling.

Math skills covered

  • Proportional relationships, unit rates, irrational numbers, square-root estimates, exponents, scientific notation, rational numbers, and percent change
  • Equivalent expressions, linear equations, equations with different solution sets, functions, slope, inequalities, linear models, and systems
  • Transformations, angle relationships, Pythagorean theorem, circles, volume, surface area, and coordinate geometry
  • Samples, populations, measures of center, variability, probability, compound events, scatter plots, and two-way data
  • Multi-step equations, percent models, scale models, area and volume models, and reasonableness checks

How to use this page

Complete one 10-question set at a time. Show intermediate steps, check signs and units, and review the explanation for every missed or guessed answer.

This is supplemental State Test Practice, State Assessment Practice, and Standardized Test Practice. It does not replace current California Department of Education guidance, official CAASPP blueprints, accommodations, or testing schedules.

For the broader California assessment hub, visit California State Assessments.

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5 Tests
1. Test2. Test3. Test4. Test5. Test

5. Test

California Grade 8 CAASPP Math Practice Questions

A 10-question California Grade 8 CAASPP Math practice set on mathematical modeling and applications, with answers and explanations.

Read each question carefully, choose one answer, and review the explanation after responding.

10 Questions
0/10 Questions0 %
Correct 0
Incorrect 0
Unanswered 10
1. QuestionMultiple choice

A streaming service charges 9 dollars per month plus 2 dollars for each movie rented. What is the cost for 7 rentals?

Please select an answer first.

Correct answer: A

The correct answer is 23 dollars.

  1. Identify the task: Decide whether the question asks about number systems, expressions, equations, functions, geometry, data, probability, or modeling.
  2. Use the quantities: The total is 9 + 2(7) = 23 dollars.
  3. Check the result: Review signs, units, operations, and whether the answer is reasonable in the situation.

The total is 9 + 2(7) = 23 dollars.

2. QuestionMultiple choice

A school’s enrollment grows from 800 to 920 students. What is the percent increase?

Please select an answer first.

Correct answer: B

The correct answer is 15 percent.

  1. Identify the task: Decide whether the question asks about number systems, expressions, equations, functions, geometry, data, probability, or modeling.
  2. Use the quantities: The increase is 120, and 120 ÷ 800 = 0.15, or 15 percent.
  3. Check the result: Review signs, units, operations, and whether the answer is reasonable in the situation.

The increase is 120, and 120 ÷ 800 = 0.15, or 15 percent.

3. QuestionMultiple choice

A rectangular patio has an area of 180 square feet and a width of 9 feet. What is its length?

Please select an answer first.

Correct answer: C

The correct answer is 20 feet.

  1. Identify the task: Decide whether the question asks about number systems, expressions, equations, functions, geometry, data, probability, or modeling.
  2. Use the quantities: Length equals area divided by width: 180 ÷ 9 = 20 feet.
  3. Check the result: Review signs, units, operations, and whether the answer is reasonable in the situation.

Length equals area divided by width: 180 ÷ 9 = 20 feet.

4. QuestionMultiple choice

A car travels 55 miles per hour for h hours and then travels 20 additional miles. Which expression gives the total distance?

Please select an answer first.

Correct answer: D

The correct answer is 55h + 20.

  1. Identify the task: Decide whether the question asks about number systems, expressions, equations, functions, geometry, data, probability, or modeling.
  2. Use the quantities: The distance during the trip is 55h, and the additional distance adds 20.
  3. Check the result: Review signs, units, operations, and whether the answer is reasonable in the situation.

The distance during the trip is 55h, and the additional distance adds 20.

5. QuestionMultiple choice

A store discounts a 120-dollar item by 25 percent and then adds 8 percent sales tax to the discounted price. What is the final price?

Please select an answer first.

Correct answer: A

The correct answer is 97.20 dollars.

  1. Identify the task: Decide whether the question asks about number systems, expressions, equations, functions, geometry, data, probability, or modeling.
  2. Use the quantities: The discounted price is 120 × 0.75 = 90 dollars; adding 8 percent gives 90 × 1.08 = 97.20 dollars.
  3. Check the result: Review signs, units, operations, and whether the answer is reasonable in the situation.

The discounted price is 120 × 0.75 = 90 dollars; adding 8 percent gives 90 × 1.08 = 97.20 dollars.

6. QuestionMultiple choice

A tank contains 14 liters and is filled at 3.5 liters per minute. How many minutes are needed to reach 56 liters?

Please select an answer first.

Correct answer: B

The correct answer is 12 minutes.

  1. Identify the task: Decide whether the question asks about number systems, expressions, equations, functions, geometry, data, probability, or modeling.
  2. Use the quantities: The tank needs 56 − 14 = 42 liters, and 42 ÷ 3.5 = 12 minutes.
  3. Check the result: Review signs, units, operations, and whether the answer is reasonable in the situation.

The tank needs 56 − 14 = 42 liters, and 42 ÷ 3.5 = 12 minutes.

7. QuestionMultiple choice

A rectangular prism has a volume of 360 cubic inches. Its length is 12 inches and width is 5 inches. What is the height?

Please select an answer first.

Correct answer: C

The correct answer is 6 inches.

  1. Identify the task: Decide whether the question asks about number systems, expressions, equations, functions, geometry, data, probability, or modeling.
  2. Use the quantities: Height equals 360 ÷ (12 × 5) = 6 inches.
  3. Check the result: Review signs, units, operations, and whether the answer is reasonable in the situation.

Height equals 360 ÷ (12 × 5) = 6 inches.

8. QuestionMultiple choice

A student has 150 dollars. After spending 40 percent, the student saves half of what remains. How much is left?

Please select an answer first.

Correct answer: D

The correct answer is 45 dollars.

  1. Identify the task: Decide whether the question asks about number systems, expressions, equations, functions, geometry, data, probability, or modeling.
  2. Use the quantities: After spending, 60 percent of 150 is 90 dollars; saving half leaves 45 dollars.
  3. Check the result: Review signs, units, operations, and whether the answer is reasonable in the situation.

After spending, 60 percent of 150 is 90 dollars; saving half leaves 45 dollars.

9. QuestionMultiple choice

A map distance is 7.2 centimeters, with a scale of 1 centimeter for 4 kilometers. What is the actual distance?

Please select an answer first.

Correct answer: A

The correct answer is 28.8 kilometers.

  1. Identify the task: Decide whether the question asks about number systems, expressions, equations, functions, geometry, data, probability, or modeling.
  2. Use the quantities: Multiply 7.2 by 4 to get 28.8 kilometers.
  3. Check the result: Review signs, units, operations, and whether the answer is reasonable in the situation.

Multiply 7.2 by 4 to get 28.8 kilometers.

10. QuestionMultiple choice

A square garden’s side length is increased from 6 meters to 9 meters. By what factor does its area increase?

Please select an answer first.

Correct answer: B

The correct answer is 2.25.

  1. Identify the task: Decide whether the question asks about number systems, expressions, equations, functions, geometry, data, probability, or modeling.
  2. Use the quantities: The area factor is the square of the side-length factor: (9 ÷ 6)² = 1.5² = 2.25.
  3. Check the result: Review signs, units, operations, and whether the answer is reasonable in the situation.

The area factor is the square of the side-length factor: (9 ÷ 6)² = 1.5² = 2.25.

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Frequently asked questions about California Grade 8 CAASPP Math Practice Test

Which Math skills are covered?

The page covers number systems, proportional relationships, algebra, functions, equations, inequalities, geometry, statistics, probability, and modeling for Grade 8.

How many questions are included?

There are five practice sets with 10 questions each, for 50 questions in total. Each set can be completed separately.

Are these official CAASPP questions?

No. These are original supplemental practice questions. Check the latest California Department of Education information for official materials, standards, accommodations, and policies.