GED Practice Test: Video 1 Answers (25 Questions) — Questions and Answers

Question 1: What is 15% of 80?

10
12 (Correct answer)
14
16

Correct answer: 12

10% of 80 is 8 and 5% is 4, so 15% is 12. Choosing 10 or 16 comes from mis-adding the 10% and 5% pieces.

Question 2: Solve for x: 3x + 5 = 20.

5 (Correct answer)
6
15
4

Correct answer: 5

Subtracting 5 gives 3x = 15, so x = 5. Answer 15 forgets to divide by 3.

Question 3: What is 3/4 + 1/8?

4/12
1/2
5/8
7/8 (Correct answer)

Correct answer: 7/8

3/4 equals 6/8, and 6/8 + 1/8 = 7/8. Adding tops and bottoms (4/12) is a common mistake.

Question 4: What is the slope of the line y = 2x - 3?

2 (Correct answer)
1/2
3
-3

Correct answer: 2

In y = mx + b, m is the slope, so the slope is 2. The value -3 is the y-intercept, not the slope.

Question 5: What is the average of 4, 8, and 12?

12
6
10
8 (Correct answer)

Correct answer: 8

4 + 8 + 12 = 24, and 24 divided by 3 is 8. Ten would be the average of 8 and 12 only.

Question 6: What is 2 to the fifth power?

10
32 (Correct answer)
64
25

Correct answer: 32

2 x 2 x 2 x 2 x 2 = 32. Ten comes from multiplying 2 by 5 instead of using an exponent.

Question 7: A $40 jacket is on sale for 25% off. What is the sale price?

$35
$10
$25
$30 (Correct answer)

Correct answer: $30

25% of 40 is 10, so the sale price is 40 - 10 = $30. Answer $10 is only the discount amount.

Question 8: What is the main idea of a passage?

The author's name and title
The first sentence only
The central point the author wants to convey (Correct answer)
A minor supporting detail

Correct answer: The central point the author wants to convey

The main idea is the central message the whole passage develops. Supporting details only back it up and are not the main idea.

Question 9: Which sentence uses the correct word?

Their going to the store later.
They're going to the store later. (Correct answer)
There going to the store later.
Theyre going to the store later.

Correct answer: They're going to the store later.

They're is the contraction of 'they are', which fits the sentence. 'Their' shows possession and 'there' points to a place.

Question 10: A character slams the door and clenches her fists. What can you infer?

She is sleepy
She is delighted
She is angry (Correct answer)
She is confused

Correct answer: She is angry

Slamming a door and clenching fists are signs of anger. Delight or sleepiness would not be shown this way.

Question 11: Which choice fixes the comma splice? 'I was tired, I went to bed.'

I was tired, and, I went to bed.
I was tired I went to bed.
I was tired, so I went to bed. (Correct answer)
I was tired, went to bed.

Correct answer: I was tired, so I went to bed.

Adding a comma plus 'so' correctly joins the independent clauses. Removing the comma entirely creates a run-on.

Question 12: An author lists facts and urges readers to vote. What is the likely purpose?

To entertain
To persuade (Correct answer)
To tell a story
To describe a place

Correct answer: To persuade

Urging readers to take action signals a persuasive purpose. Entertainment would rely on humor or story, not a call to vote.

Question 13: Which sentence has correct subject-verb agreement?

The dog bark loudly.
The dogs barks loudly.
The dog barking loud.
The dogs bark loudly. (Correct answer)

Correct answer: The dogs bark loudly.

'Dogs' is plural, so the verb 'bark' is correct. 'Dogs barks' mismatches number.

Question 14: What gas do plants take in during photosynthesis?

Hydrogen
Nitrogen
Carbon dioxide (Correct answer)
Oxygen

Correct answer: Carbon dioxide

Plants absorb carbon dioxide and release oxygen. Oxygen is the product, not the input.

Question 15: Newton's first law says an object at rest stays at rest unless what happens?

It gets heavier
Time passes
It cools down
An unbalanced force acts on it (Correct answer)

Correct answer: An unbalanced force acts on it

An object changes its motion only when an unbalanced force acts on it. Time or temperature alone does not change motion.

Question 16: In DNA, which base pairs with adenine?

Guanine
Cytosine
Uracil
Thymine (Correct answer)

Correct answer: Thymine

In DNA, adenine pairs with thymine. Uracil replaces thymine only in RNA, which makes it a tempting wrong choice.

Question 17: What charge does an electron carry?

It varies
Neutral
Positive
Negative (Correct answer)

Correct answer: Negative

Electrons carry a negative charge, protons are positive, and neutrons are neutral.

Question 18: In an experiment, what is the independent variable?

The factor the scientist changes (Correct answer)
The final conclusion
The result that is measured
The factors kept constant

Correct answer: The factor the scientist changes

The independent variable is what the experimenter changes. The measured result is the dependent variable.

Question 19: Which is an example of a chemical change?

Ice melting
Paper being torn
Iron rusting (Correct answer)
Sugar dissolving in water

Correct answer: Iron rusting

Rusting makes iron oxide, a new substance. Melting, tearing, and dissolving change form only.

Question 20: Which principle divides government into legislative, executive, and judicial branches?

Popular sovereignty
Separation of powers (Correct answer)
Federalism
Judicial review

Correct answer: Separation of powers

Separation of powers splits authority among three branches. Federalism divides power between national and state governments.

Question 21: If demand for a product rises while supply stays the same, what usually happens to price?

It becomes zero
It rises (Correct answer)
It stays frozen
It falls

Correct answer: It rises

Higher demand with fixed supply pushes prices up. A price drop would need demand to fall or supply to grow.

Question 22: Which amendment protects freedom of speech and religion?

Second
Tenth
First (Correct answer)
Fifth

Correct answer: First

The First Amendment protects speech, religion, press, assembly, and petition. The Second concerns arms.

Question 23: The Louisiana Purchase in 1803 did what for the United States?

Ended the Civil War
Created the Federal Reserve
Added Alaska
Doubled its size (Correct answer)

Correct answer: Doubled its size

The purchase roughly doubled U.S. territory. Alaska was bought from Russia in 1867.

Question 24: Which is a check the president has on Congress?

Declaring laws unconstitutional
Vetoing a bill (Correct answer)
Writing the budget alone
Confirming judges

Correct answer: Vetoing a bill

The president can veto legislation. Declaring laws unconstitutional is the courts' power and the Senate confirms judges.

Question 25: Which is a primary source?

A textbook chapter
An encyclopedia entry
A soldier's diary from the war (Correct answer)
A documentary made today

Correct answer: A soldier's diary from the war

A diary written during the event is firsthand. Textbooks and documentaries are secondary sources.

GED Practice Test: Video 1 Answers (25 Questions)

What is 15% of 80?

What Practice Test Geeks adds beyond an AI chat for GED

An AI chatbot can quiz you, but it can't reproduce the exam conditions or keep your record. Here you get:

A timed, full-length GED mock exam — 200 questions in 450 minutes with a 65% pass mark, modeled on the official exam's question count and time limit, followed by a score report broken down by exam domain.
A fixed GED question bank: the same test every attempt, so your score is comparable from one try to the next instead of changing with every regenerated quiz.
Progress saved on your device: completed tests, scores and missed questions stay in My Progress, so you can retake only what you got wrong.
A printable GED cheat sheet you can print or save as a PDF.
GED flashcards built from the same question bank.