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Free ATI TEAS practice
20 free ATI TEAS practice questions
Try an original mixed set across Reading, Mathematics, Science, and English & Language Usage, then use the rationales to choose what to review next.
Start question 1These are original Passy questions based on ATI's public Version 7 content outline. The set includes all four sections, but it is not weighted like the real exam. They are not official ATI TEAS questions and do not predict your exam result.
Reading · Key Ideas & DetailsStep 1 · Choose one answer
A community garden notice says: “Volunteers should water seedlings early in the morning. Cooler temperatures reduce evaporation, so more water reaches the roots. Morning watering also lets leaves dry before nightfall.” Which statement best expresses the main idea?
Question review
All 20 ATI TEAS questions with explanations
Try the set above first, then use this list to review. Each answer and explanation stays closed until you open it.
A community garden notice says: “Volunteers should water seedlings early in the morning. Cooler temperatures reduce evaporation, so more water reaches the roots. Morning watering also lets leaves dry before nightfall.” Which statement best expresses the main idea?
- Seedlings should receive water only when their leaves are dry.
- Morning is an effective time to water seedlings.
- Community gardens require daily volunteers.
- Cool temperatures stop all evaporation.
Show answer and explanation for question 1
Correct answer: B · Morning is an effective time to water seedlings.
Both supporting details explain why morning watering is effective: less water evaporates, and leaves have time to dry. The other choices add claims the notice does not make.
Look for this next time: Identify the idea supported by all major details, not a statement based on only one phrase.
A chart shows library visits rising from 1,200 in March to 1,650 in April after weekend hours were added. A staff note says a new reading program also began in April. Which conclusion is most justified?
- Weekend hours alone caused every additional visit.
- The reading program had no effect on visits.
- Visits increased in April, but the information does not isolate one cause.
- Library visits will continue increasing every month.
Show answer and explanation for question 2
Correct answer: C · Visits increased in April, but the information does not isolate one cause.
The chart establishes an increase, but two changes occurred at the same time. The evidence cannot show how much either change contributed or predict future months.
Look for this next time: Separate what the data shows from causal or future claims the evidence cannot support.
A recipe uses 2.5 cups of oats for 20 servings. How many cups are needed for 32 servings at the same rate?
- 3 cups
- 3.5 cups
- 4 cups
- 4.5 cups
Show answer and explanation for question 3
Correct answer: C · 4 cups
Set up the proportion 2.5/20 = x/32. Multiplying 2.5 by 32 and dividing by 20 gives x = 4 cups.
Look for this next time: For a constant rate, keep the quantities in the same order when setting up a proportion.
A rectangular study room measures 12 feet by 9 feet. A rug will cover 75% of the floor. What area will the rug cover?
- 27 square feet
- 72 square feet
- 81 square feet
- 108 square feet
Show answer and explanation for question 4
Correct answer: C · 81 square feet
The room area is 12 × 9 = 108 square feet. Seventy-five percent of 108 is 0.75 × 108 = 81 square feet.
Look for this next time: Find the whole area first, then multiply by the percentage written as a decimal.
Which structure is the primary site where oxygen moves from inhaled air into the blood?
- Alveoli
- Bronchi
- Diaphragm
- Trachea
Show answer and explanation for question 5
Correct answer: A · Alveoli
Alveoli are thin-walled air sacs surrounded by capillaries. Their structure creates the surface where oxygen and carbon dioxide diffuse between air and blood.
Look for this next time: Connect respiratory structures to their functions: conducting air is different from exchanging gases.
Which process directly increases genetic variation by exchanging DNA between paired homologous chromosomes?
- Binary fission
- Crossing over during meiosis
- DNA replication before mitosis
- Translation at a ribosome
Show answer and explanation for question 6
Correct answer: B · Crossing over during meiosis
During prophase I of meiosis, homologous chromosomes can exchange corresponding DNA segments. This crossing over creates new combinations of alleles.
Look for this next time: Know which cell processes preserve genetic information and which create variation.
A solution changes from pH 6 to pH 4. Which statement is correct?
- The solution became more basic.
- The hydrogen ion concentration decreased 2 times.
- The solution became more acidic.
- The solution is now neutral.
Show answer and explanation for question 7
Correct answer: C · The solution became more acidic.
A lower pH indicates greater acidity. Because the pH scale is logarithmic, a two-unit drop represents a 100-fold increase in hydrogen ion concentration.
Look for this next time: On the pH scale, lower values are more acidic and each whole-number step represents a tenfold change.
A student tests whether light color affects plant growth. Each group receives a different light color. Which condition should be kept the same to best isolate the effect of light color?
- The color of light
- The final height of each plant
- The amount of water each plant receives
- The measured growth result
Show answer and explanation for question 8
Correct answer: C · The amount of water each plant receives
Water amount is a controlled variable. Keeping it constant reduces an alternative explanation for differences in growth while light color remains the independent variable.
Look for this next time: Change the independent variable, measure the dependent variable, and keep other relevant conditions controlled.
Which sentence uses correct subject-verb agreement?
- The list of lab supplies are on the desk.
- Each of the students have a calculator.
- The results from both trials were consistent.
- Neither the notes nor the textbook explain the diagrams.
Show answer and explanation for question 9
Correct answer: C · The results from both trials were consistent.
The plural subject “results” correctly takes the plural verb “were.” In the other sentences, the grammatical subject and verb do not agree.
Look for this next time: Find the grammatical subject before choosing the verb; intervening phrases can distract from it.
Which revision is the most concise without changing the meaning of this sentence? “Due to the fact that the bus arrived late, Maya missed the opening announcement.”
- Because the bus arrived late, Maya missed the opening announcement.
- The bus, arriving in a late manner, caused Maya to miss the opening announcement.
- Maya missed the opening announcement due to the fact of a late bus.
- It was the bus that was late, and Maya missed the opening announcement.
Show answer and explanation for question 10
Correct answer: A · Because the bus arrived late, Maya missed the opening announcement.
“Because” replaces the wordy phrase “due to the fact that” while preserving the cause-and-effect relationship.
Look for this next time: Prefer direct words and remove redundant phrases when revising for clarity and concision.
A clinic handout says: “Take this tablet with food. If you miss a morning dose, skip it and take the evening dose. Do not take two tablets at once.” Which statement matches the handout?
- A missed morning dose should be added to the evening dose
- A missed morning dose is skipped, and the evening dose stays one tablet
- The tablet must be taken on an empty stomach
- The handout says to call the clinic before every dose
Show answer and explanation for question 11
Correct answer: B · A missed morning dose is skipped, and the evening dose stays one tablet
The handout gives two instructions that work together: skip the missed morning tablet, and do not double the evening dose. Adding the tablets, taking the drug without food, or inventing a phone call are not in the text.
Look for this next time: Match the statement to the sentences that are actually on the page.
A paragraph describes one town’s bus delays. The writer then says, “Cities everywhere should copy this town’s schedule.” Which evaluation is most accurate?
- The example supports a claim about one town, but it does not by itself prove what every city should do
- One town’s schedule is enough evidence for a nationwide rule
- A suggestion is the same thing as a measured result
- The paragraph must be false because it mentions only one place
Show answer and explanation for question 12
Correct answer: A · The example supports a claim about one town, but it does not by itself prove what every city should do
The local description can be useful and still be too small to justify “everywhere.” That is a scope problem, not a reason to call the whole paragraph false. A recommendation is not the same as a result measured in many cities.
Look for this next time: Ask whether the evidence is as wide as the claim.
A study-skills note says: “Review the questions before the passage. Then read the passage once. Answer only the questions the passage supports.” What is the main instruction?
- Memorize the passage before looking at the questions
- Use the questions to guide one reading, then stay inside the passage
- Skip the passage if the questions look familiar
- Add outside facts when the passage is incomplete
Show answer and explanation for question 13
Correct answer: B · Use the questions to guide one reading, then stay inside the passage
The note’s sequence is preview the questions, read once, and answer from the passage. Memorizing first, skipping the text, or importing outside facts contradicts that sequence.
Look for this next time: Follow the order the note gives. Do not add a strategy it never states.
A student answers 18 of 24 practice items correctly. What percent is correct?
- 65%
- 70%
- 75%
- 80%
Show answer and explanation for question 14
Correct answer: C · 75%
18 ÷ 24 = 0.75, and 0.75 × 100 = 75%. 18 ÷ 24 is not 0.65 or 0.80. 70% of 24 would be 16.8 items, not 18.
Look for this next time: Percent correct is part ÷ whole, then multiply by 100.
A line graph shows a plant’s height: 4 cm on day 1, 6 cm on day 3, and 9 cm on day 5. Which statement do these three points support?
- The recorded height increased from day 1 to day 5
- The plant will be 12 cm on day 7
- Every plant in the room grew at this rate
- The plant stopped growing after day 3
Show answer and explanation for question 15
Correct answer: A · The recorded height increased from day 1 to day 5
The plotted points rise from 4 cm to 9 cm, so the recorded height increased. Day 7 is not on the graph. One plant does not prove every plant, and the day-5 point is higher than day 3, so growth did not stop.
Look for this next time: State only the change the plotted points show.
Which blood vessel carries oxygenated blood from the lungs back to the heart?
- Pulmonary artery
- Pulmonary vein
- Superior vena cava
- Aorta
Show answer and explanation for question 16
Correct answer: B · Pulmonary vein
Pulmonary veins return oxygenated blood from the lungs to the left atrium. Pulmonary arteries carry blood from the right ventricle to the lungs. The vena cava returns systemic blood to the right atrium, and the aorta carries blood out to the body.
Look for this next time: In the pulmonary circuit, the veins are the vessels that bring oxygenated blood back.
A cell is placed in a solution with a higher solute concentration than the cell’s interior. Which net movement is expected?
- Water leaves the cell
- Water enters the cell
- The cell wall dissolves in an animal cell
- Solute cannot affect water movement
Show answer and explanation for question 17
Correct answer: A · Water leaves the cell
A hypertonic surrounding pulls water out by osmosis. Water entering would fit a hypotonic surrounding. Animal cells do not have a cell wall to dissolve, and solute concentration is exactly what drives this water movement.
Look for this next time: Hypertonic surroundings: water leaves the cell.
Which change is a chemical change rather than a physical change?
- Ice melting in a glass
- Sugar dissolving in water
- Iron forming rust
- Water boiling into steam
Show answer and explanation for question 18
Correct answer: C · Iron forming rust
Rusting forms a new substance, iron oxide. Melting, dissolving, and boiling change state or mixture without creating a new chemical substance. Those three can be reversed without a chemical reaction.
Look for this next time: A new substance means a chemical change. A change of state does not.
Which sentence uses the comma correctly?
- After the lab, the students washed their hands.
- After the lab the students, washed their hands.
- After, the lab the students washed their hands.
- After the lab the students washed, their hands.
Show answer and explanation for question 19
Correct answer: A · After the lab, the students washed their hands.
An introductory phrase is followed by one comma. Choice b separates the subject from its verb, c breaks up the introductory phrase, and d separates the verb from its object.
Look for this next time: Put the comma after a beginning phrase, not between the subject and the verb.
In the sentence “The concise summary left out every example,” concise most nearly means:
- brief and focused
- rude
- incorrect
- handwritten
Show answer and explanation for question 20
Correct answer: A · brief and focused
Concise means short and to the point. The sentence says examples were left out, which fits a brief summary. It does not say the summary was rude, wrong, or handwritten.
Look for this next time: Use the sentence around the word. Concise is about length and focus, not tone.
Use the sample well
The rationale matters more than the score.
A short set can show you what deserves another look. It is intentionally small, so it cannot measure full ATI TEAS readiness.
Read every rationale
Confirm why the best option fits, even when you were right.
Follow the pattern
Use recurring misses—not one score—to choose your next focus.
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