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Quizzes > General Knowledge & Mixed

Are You Smarter Than an 8th Grader? Take the 8th grade quiz

Quick, free quiz with 8th grade questions. Instant results.

Editorial: Review CompletedCreated By: Justin LeppanenUpdated Aug 27, 2025
Difficulty: Moderate
2-5mins
Learning OutcomesCheat Sheet
Paper art quiz illustration challenging viewers knowledge against 8th grade level on coral background.

This 8th grade quiz helps you see how you stack up in middle school math, science, and history. Answer quick questions and get instant feedback with explanations as you go. When you finish, try the 9th grade general knowledge quiz, compare levels with a 6th grade quiz, or take a fun step back with smarter than a 4th grader.

What is the place value of the digit 7 in the number 5,784?
700 | Explanation: In 5,784 the 7 is in the hundreds place, so its value is 700.
7
70
7,000
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Which process allows green plants to make their own food using sunlight?
Decomposition
Photosynthesis | Explanation: Photosynthesis uses sunlight, carbon dioxide, and water to produce glucose and oxygen.
Respiration
Fermentation
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Choose the correct sentence.
They are going to the museum after lunch. | Explanation: "They are" is correctly contracted as "they're" if contracted, and subject-verb agreement is correct.
Their going to the museum after lunch.
There going to the museum after lunch.
They is going to the museum after lunch.
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Which branch of the U.S. government makes federal laws?
Executive branch
Judicial branch
State governors
Legislative branch | Explanation: Congress, made of the House and Senate, writes and passes laws.
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The Pacific Ocean is the largest ocean on Earth.
False
True
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Which is the correct order of operations?
Parentheses, Exponents, Multiplication and Division, Addition and Subtraction | Explanation: PEMDAS defines the standard order.
Multiplication, Division, Addition, Subtraction, Parentheses, Exponents
Exponents, Parentheses, Multiplication, Addition, Division, Subtraction
Addition, Subtraction, Multiplication, Division, Exponents, Parentheses
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What is the volume of a rectangular prism with dimensions 5 cm by 3 cm by 2 cm?
10 cubic centimeters
20 cubic centimeters
30 cubic centimeters | Explanation: Volume = l x w x h = 5 x 3 x 2 = 30.
32 cubic centimeters
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Which celestial body is at the center of our solar system?
Earth
The Sun | Explanation: The Sun is the central star around which planets orbit.
The Moon
Jupiter
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A comma is required before the conjunction in a compound sentence with two independent clauses.
True
False
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What is the slope of the line passing through (1,2) and (3,6)?
1
4
2 | Explanation: Slope = (6 - 2) / (3 - 1) = 4/2 = 2.
-2
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Which sentence correctly uses a colon?
I bought: a pencil and paper.
Bring these items: a pencil, a notebook, and a calculator. | Explanation: Use a colon to introduce a list after an independent clause.
The choices are: and they are many.
She said: that she was late.
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Solve for x: 5x - 7 = 3x + 9
x = 8 | Explanation: Subtract 3x both sides to get 2x - 7 = 9; add 7; 2x = 16; x = 8.
x = -8
x = 4
x = 1
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Which energy transformation occurs when a ball held above the ground is released?
Potential energy converts to kinetic energy | Explanation: Gravitational potential energy changes into motion energy as it falls.
Thermal energy converts to chemical energy
Nuclear energy converts to electrical energy
Kinetic energy converts to potential energy
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Which sentence has correct subject-verb agreement?
There is many reasons to study.
Neither the students nor the teacher is late. | Explanation: The verb agrees with the nearer subject, "teacher" (singular).
The list of items are long.
Neither the students nor the teacher are late.
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What is the probability of rolling an even number on a fair six-sided die?
1/3
1/2 | Explanation: Even outcomes are 2, 4, 6 (3 of 6), so 3/6 = 1/2.
1/6
2/3
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Which best describes Newton's third law of motion?
Force equals mass times acceleration.
Objects fall at a constant speed.
An object in motion stays in motion unless acted on by a force.
For every action, there is an equal and opposite reaction. | Explanation: Forces come in pairs with equal magnitude and opposite direction.
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Which sentence correctly uses the subjunctive mood?
If I were tall, I joined the team.
If I am taller, I would join the team.
If I were taller, I would join the team. | Explanation: Use "were" with hypothetical statements in the subjunctive.
If I was taller, I would join the team.
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Which of the following is NOT a function of the executive branch of the U.S. government?
Conducting foreign policy
Declaring laws unconstitutional | Explanation: Judicial review is a function of the judicial branch.
Enforcing laws
Commanding the armed forces
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Which equation represents a line with y-intercept 3 and slope -2?
y = 3x - 2
y = -2x + 3 | Explanation: In slope-intercept form y = mx + b, m = -2 and b = 3.
y = -2x - 3
y = 2x + 3
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Which layer of the atmosphere contains most weather events?
Thermosphere
Stratosphere
Troposphere | Explanation: Weather occurs primarily in the troposphere, the lowest layer.
Mesosphere
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Study Outcomes

  1. Recall Mathematical Concepts -

    Accurately remember and solve key eighth grade math problems, including basic algebra and geometry.

  2. Apply Scientific Principles -

    Use scientific reasoning to answer middle school science questions on topics like the periodic table and ecosystems.

  3. Analyze Language Arts Elements -

    Break down sentence structure and vocabulary to improve understanding of grammar and reading comprehension.

  4. Recall Historical Events -

    Retrieve important dates, figures, and events from eighth grade history lessons to strengthen your knowledge.

  5. Evaluate Personal Performance -

    Assess your quiz results to identify strengths and gaps in your understanding of core subjects.

Cheat Sheet

  1. Linear Equations and the Distributive Property -

    Master solving one-step and two-step equations by isolating variables, such as 2(x+3)=14. Understanding the distributive property a(b+c)=ab+ac, as highlighted by Khan Academy, simplifies complex expressions and boosts speed on "are you smarter than an 8th grader" quizzes. Practice equations like 3(x−2)=9 to reinforce each step and build confidence.

  2. Scientific Method and Variable Control -

    Follow the five-step scientific method - question, hypothesis, experiment, analysis, conclusion - to structure experiments clearly (Source: Science Buddies). Differentiate independent variables (what you change) from dependent variables (what you measure) to design fair tests. Jot down observations meticulously to sharpen critical thinking for any are you smarter than an 8th grader questions.

  3. Grammar Essentials: Parts of Speech and Punctuation -

    Identify nouns, verbs, adjectives, and adverbs to build strong sentences; the Purdue OWL emphasizes knowing each part's role for clear writing. Use the FANBOYS mnemonic (for, and, nor, but, or, yet, so) to remember coordinating conjunctions and place commas accordingly. This foundation helps you breeze through challenging language arts sections in an "are you smarter than a 8th grader" quiz.

  4. Key U.S. Revolutionary History Milestones -

    Review major events like the Stamp Act (1765), Boston Tea Party (1773), and Declaration of Independence (1776) with dates and causes (Source: National Archives). Understand how the Articles of Confederation led to the Constitution in 1787 and why the Bill of Rights was added. Chronological linkage of events gives context for history questions in the "are you smarter than an 8th grader" format.

  5. Data Interpretation: Mean, Median, Mode, and Graphs -

    Calculate mean (sum of data ÷ number of values), median (middle value), and mode (most frequent) to summarize datasets quickly. Interpret bar graphs, line plots, and circle charts accurately - per National Center for Education Statistics - to spot trends or outliers. Solid graph-reading skills help you tackle any data-driven "are you smarter than an 8th grader" question without hesitation.

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