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Grade 12 ACT Practice Tests

These Grade 12 ACT practice tests provide focused practice for ACT English, Math, Reading, and Science reasoning. Questions cover grammar, punctuation, rhetorical purpose, algebra, geometry, data interpretation, evidence, variables, controls, and scientific conclusions.

Skills covered

  • ACT English: sentence boundaries, punctuation, modifiers, agreement, pronouns, transitions, concision, organization, and rhetorical purpose
  • ACT Math: linear equations, systems, functions, quadratics, percentages, ratios, averages, probability, geometry, coordinates, and exponents
  • ACT Reading: central ideas, inferences, evidence, comparisons, author purpose, and qualified conclusions
  • ACT Science: experimental controls, variables, data trends, comparisons, sample limitations, and evidence-based claims

How to use these practice tests

For English, check the sentence boundary and the relationship between ideas. For Math, translate the problem into an equation and verify units. For Reading and Science, identify the evidence, comparison, control, or trend that supports the answer.

For more Grade 12 preparation, return to the College and Career Preparation category.

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Grade 12 ACT Practice Tests

Practice ACT English, Math, Reading, and Science questions covering conventions, rhetoric, algebra, geometry, data interpretation, evidence, and scientific reasoning.

Choose the best answer. Use sentence structure and rhetoric for English, equations and units for Math, passage evidence for Reading, and variables and controls for Science.

10 Questions
0/10 Questions0 %
Correct 0
Incorrect 0
Unanswered 10
1. QuestionMultiple choice

Which choice places the modifier correctly? Designed to reduce energy use, ___.

Please select an answer first.

Correct answer: A

The correct answer is the building includes adjustable lighting.

  1. Identify the ACT skill: Determine whether the question tests English conventions, rhetoric, Math, Reading, or Science reasoning.
  2. Use the passage or model: The building, not the lighting or engineers, is the thing designed to reduce energy use, so it must directly follow the modifier.
  3. Check the answer: The correct answer is the building includes adjustable lighting.

The building, not the lighting or engineers, is the thing designed to reduce energy use, so it must directly follow the modifier.

2. QuestionMultiple choice

A data set contains 6, 8, 10, 12, and 14. What is the average of the values?

Please select an answer first.

Correct answer: B

The correct answer is 10.

  1. Identify the ACT skill: Determine whether the question tests English conventions, rhetoric, Math, Reading, or Science reasoning.
  2. Use the passage or model: The sum is 50 and there are 5 values, so the average is 50/5=1050/5=10.
  3. Check the answer: The correct answer is 10.

The sum is 50 and there are 5 values, so the average is 50/5=1050/5=10.

3. QuestionMultiple choice

Which choice correctly joins the sentences? The forecast predicted rain. The outdoor event continued as planned.

Please select an answer first.

Correct answer: C

The correct answer is The forecast predicted rain; nevertheless, the outdoor event continued as planned..

  1. Identify the ACT skill: Determine whether the question tests English conventions, rhetoric, Math, Reading, or Science reasoning.
  2. Use the passage or model: A semicolon can join the two independent clauses, and nevertheless correctly signals contrast.
  3. Check the answer: The correct answer is The forecast predicted rain; nevertheless, the outdoor event continued as planned..

A semicolon can join the two independent clauses, and nevertheless correctly signals contrast.

4. QuestionMultiple choice

A passage describes a scientist comparing two materials under the same temperature and pressure. What is the most likely purpose?

Please select an answer first.

Correct answer: D

The correct answer is To determine how the materials differ when other conditions are controlled.

  1. Identify the ACT skill: Determine whether the question tests English conventions, rhetoric, Math, Reading, or Science reasoning.
  2. Use the passage or model: Holding conditions constant helps isolate the effect of the material being tested.
  3. Check the answer: The correct answer is To determine how the materials differ when other conditions are controlled.

Holding conditions constant helps isolate the effect of the material being tested.

5. QuestionMultiple choice

If x4=7\frac{x}{4}=7, what is the value of xx?

Please select an answer first.

Correct answer: A

The correct answer is 28.

  1. Identify the ACT skill: Determine whether the question tests English conventions, rhetoric, Math, Reading, or Science reasoning.
  2. Use the passage or model: Multiply both sides by 4 to get x=28x=28.
  3. Check the answer: The correct answer is 28.

Multiply both sides by 4 to get x=28x=28.

6. QuestionMultiple choice

In context, the word substantial most nearly means

Please select an answer first.

Correct answer: B

The correct answer is considerable.

  1. Identify the ACT skill: Determine whether the question tests English conventions, rhetoric, Math, Reading, or Science reasoning.
  2. Use the passage or model: Substantial means large, important, or considerable in amount or degree.
  3. Check the answer: The correct answer is considerable.

Substantial means large, important, or considerable in amount or degree.

7. QuestionMultiple choice

If f(x)=3x−2f(x)=3x-2, what is the value of f(5)f(5)?

Please select an answer first.

Correct answer: C

The correct answer is 13.

  1. Identify the ACT skill: Determine whether the question tests English conventions, rhetoric, Math, Reading, or Science reasoning.
  2. Use the passage or model: Substitute 5 into the function: f(5)=3(5)−2=13f(5)=3(5)-2=13.
  3. Check the answer: The correct answer is 13.

Substitute 5 into the function: f(5)=3(5)−2=13f(5)=3(5)-2=13.

8. QuestionMultiple choice

Which choice correctly completes the sentence? The committee thanked Maya and ___ for organizing the workshop.

Please select an answer first.

Correct answer: D

The correct answer is me.

  1. Identify the ACT skill: Determine whether the question tests English conventions, rhetoric, Math, Reading, or Science reasoning.
  2. Use the passage or model: The pronoun is the object of thanked, so the objective form me is correct.
  3. Check the answer: The correct answer is me.

The pronoun is the object of thanked, so the objective form me is correct.

9. QuestionMultiple choice

A passage claims that a recycling program increased participation after collection bins were placed near bus stops. Which evidence best supports the claim?

Please select an answer first.

Correct answer: A

The correct answer is Participation records showing higher recycling rates at locations near the new bins.

  1. Identify the ACT skill: Determine whether the question tests English conventions, rhetoric, Math, Reading, or Science reasoning.
  2. Use the passage or model: Participation records from the relevant locations directly connect the bins with the reported increase.
  3. Check the answer: The correct answer is Participation records showing higher recycling rates at locations near the new bins.

Participation records from the relevant locations directly connect the bins with the reported increase.

10. QuestionMultiple choice

If x+y=11x+y=11 and x−y=3x-y=3, what is the value of yy?

Please select an answer first.

Correct answer: B

The correct answer is 4.

  1. Identify the ACT skill: Determine whether the question tests English conventions, rhetoric, Math, Reading, or Science reasoning.
  2. Use the passage or model: Subtract the second equation from the first: 2y=82y=8, so y=4y=4.
  3. Check the answer: The correct answer is 4.

Subtract the second equation from the first: 2y=82y=8, so y=4y=4.

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