8th Grade OST Math Practice Test Questions

8th Grade OST Math Practice Test Questions

8th Grade OST Math Practice Test Questions is a multiple-choice math challenge from Effortless Math. Read the problem, choose from the answer options below, then open the solution to see the full step-by-step working and check your reasoning against it.

Getting ready for OST (Ohio’s State Tests) math in grade 8? The 10 questions below are written for 8th graders and cover linear equations and functions, slope, systems of equations, the Pythagorean theorem, volume, exponents and scientific notation, and data analysis. Each question has a worked solution, and the numbers differ from the other grade 8 sets on this site, so you can practice with fresh problems.

These are original practice questions aligned to grade 8 math skills, not official released test items. Use them to find the topics you need to review before test day.

10 practice questions for 8th Grade OST Math

Answer one question at a time. Press Submit to see right away whether you were correct, along with the worked solution. Your score appears after the last question, with a list of the ones to review.

Question 1 of 10
1. In the ??-plane, the point \((4,3)\) and \((3,2)\) are on line \(A\). Which of the following equations of lines is parallel to line \(A\)?

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2. Jack earns $616 for his first 44 hours of work in a week and is then paid 1.5 times his regular hourly rate for any additional hours. This week, Jack needs $826 to pay his rent, bills, and other expenses. How many hours must he work to make enough money this week?

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3. If \(x+y=6\) and \(x-y=-4\), what is the value of \(x\)?

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4. If a gas tank can hold 25 gallons, how many gallons does it contain when it is \(\frac{2}{5}\) full?

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5. What is the mean (average) of these numbers? \(29,33,33,23,18,27,33\)

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6. A water tank can hold 12 gallons. How many gallons does it contain when it is \(\frac{3}{4}\) full?

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7. What is the solution of the equation \(3x+7=-17\)?

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8. Between which two consecutive integers does \(\sqrt{61}\) lie?

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9. A bag has 4 blue, 3 red and 5 orange marbles. One marble is drawn at random. What is the probability that it is NOT blue?

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10. What is the volume of a cone with radius 5 cm and height 15 cm? (Leave your answer in terms of \(\pi\).)

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Best 8th Grade OST Math Prep Resource for 2027

Answers and explanations

Every worked solution opens in the quiz box as soon as you submit that question, so you can compare your method with the solution while it is fresh. Press Try again on the last screen to work through the set a second time.

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