GED® Diagnostic Pre-Test

Answer all 24 questions, then submit. There's no time limit and no penalty for guessing — do your best on each one. On the next screen you'll get course recommendations based on what you miss.

Q1.

Simplify the fraction $\frac{8}{12}$ to lowest terms.

$\frac{2}{3}$ $\frac{4}{8}$ $\frac{8}{12}$ $\frac{3}{4}$

Q2.

What is $\frac{1}{2} + \frac{1}{4}$?

$\frac{3}{4}$ $\frac{2}{6}$ $\frac{1}{8}$ $\frac{2}{4}$

Q3.

What is $\frac{2}{3} \times \frac{3}{5}$?

$\frac{2}{5}$ $\frac{5}{8}$ $\frac{6}{8}$ $\frac{4}{5}$

Q4.

What is $20\%$ of $150$?

$30$ $15$ $50$ $300$

Q5.

An \$80 item is marked $25\%$ off. What is the sale price?

\$60 \$20 \$55 \$100

Q6.

$45$ is what percent of $90$?

$50\%$ $45\%$ $2\%$ $200\%$

Q7.

Solve for $x$: $2x + 5 = 17$.

$x = 6$ $x = 11$ $x = 22$ $x = 8.5$

Q8.

Solve for $x$: $5x - 2 = 18$.

$x = 4$ $x = 3.2$ $x = 20$ $x = 16$

Q9.

A phone plan costs \$20 per month plus \$0.10 per text. Which expression gives the monthly cost for $t$ texts?

$0.10t + 20$ $20t + 0.10$ $20.10t$ $0.10t - 20$

Q10.

What is the area of a rectangle that is $8$ cm by $5$ cm?

$40\ \text{cm}^2$ $26\ \text{cm}^2$ $13\ \text{cm}^2$ $40\ \text{cm}$

Q11.

What is the perimeter of a rectangle that is $9$ by $4$?

$26$ $36$ $13$ $40$

Q12.

A right triangle has legs of $6$ and $8$. How long is the hypotenuse?

$10$ $14$ $48$ $100$

Q13.

What is the mean (average) of $6,\ 9,\ 12$?

$9$ $12$ $27$ $6$

Q14.

What is the median of $4,\ 1,\ 7,\ 3,\ 9$?

$4$ $7$ $4.8$ $8$

Q15.

A bag holds 3 red and 5 blue marbles. What is the probability of drawing a red one?

$\frac{3}{8}$ $\frac{3}{5}$ $\frac{5}{8}$ $\frac{1}{3}$

Q16.

Which organelle is known as the 'powerhouse of the cell'?

Mitochondrion Nucleus Ribosome Cell wall

Q17.

Which gas do plants take IN from the air during photosynthesis?

Carbon dioxide Oxygen Nitrogen Hydrogen

Q18.

In an experiment testing whether fertilizer affects plant growth, what is the independent variable (the thing the scientist changes)?

The amount of fertilizer The height of the plants The amount of sunlight The type of pot used

Q19.

Read the passage, then answer.

"Honeybees do far more than make honey. As they move from flower to flower, they spread pollen, helping plants produce the fruit and seeds we rely on for food."

What is the main idea of the passage?

Honeybees help plants reproduce by spreading pollen. Honeybees make honey. Bees move from flower to flower. Fruit contains seeds.

Q20.

Which sentence uses correct subject-verb agreement?

The box of tools is heavy. The box of tools are heavy. The box of tools were heavy. The box of tools have been heavy.

Q21.

Which sentence is written correctly?

The company increased its profits this year. The company increased it's profits this year. The company increased its' profits this year. The company increased its profit's this year.

Q22.

In the United States government, which branch is responsible for making laws?

The legislative branch (Congress) The executive branch (the President) The judicial branch (the courts) The military

Q23.

The first ten amendments to the U.S. Constitution are known as the:

Bill of Rights Preamble Federalist Papers Articles of Confederation

Q24.

The American Civil War was fought primarily over which issue?

Slavery and the survival of the Union A tax on imported tea Independence from Great Britain Women's right to vote