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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 is the most concise and grammatically correct?

Please select an answer first.

Correct answer: A

The correct answer is The committee approved the plan..

  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 first choice expresses the complete idea directly without unnecessary repetition or nominalization.
  3. Check the answer: The correct answer is The committee approved the plan..

The first choice expresses the complete idea directly without unnecessary repetition or nominalization.

2. QuestionMultiple choice

If 4x−6=184x-6=18, what is the value of xx?

Please select an answer first.

Correct answer: B

The correct answer is 6.

  1. Identify the ACT skill: Determine whether the question tests English conventions, rhetoric, Math, Reading, or Science reasoning.
  2. Use the passage or model: Add 6 to both sides to get 4x=244x=24, then divide by 4 to get x=6x=6.
  3. Check the answer: The correct answer is 6.

Add 6 to both sides to get 4x=244x=24, then divide by 4 to get x=6x=6.

3. QuestionMultiple choice

Which choice correctly punctuates the sentence? The results were clear ___ the treatment improved growth.

Please select an answer first.

Correct answer: C

The correct answer is clear: the treatment improved growth.

  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 colon can introduce the explanation of what made the results clear.
  3. Check the answer: The correct answer is clear: the treatment improved growth.

A colon can introduce the explanation of what made the results clear.

4. QuestionMultiple choice

A passage describes a community garden that provides vegetables, outdoor lessons, and a meeting place. What is the passage’s primary purpose?

Please select an answer first.

Correct answer: D

The correct answer is To explain the multiple benefits of the community garden.

  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 passage lists food, educational, and social benefits, so its purpose is to explain the garden’s range of effects.
  3. Check the answer: The correct answer is To explain the multiple benefits of the community garden.

The passage lists food, educational, and social benefits, so its purpose is to explain the garden’s range of effects.

5. QuestionMultiple choice

A linear model is given by y=5x+2y=5x+2. What is the value of yy when x=−1x=-1?

Please select an answer first.

Correct answer: A

The correct answer is -3.

  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 x=−1x=-1: y=5(−1)+2=−5+2=−3y=5(-1)+2=-5+2=-3.
  3. Check the answer: The correct answer is -3.

Substitute x=−1x=-1: y=5(−1)+2=−5+2=−3y=5(-1)+2=-5+2=-3.

6. QuestionMultiple choice

The values 2, 4, 6, 8, and 20 have a mean of

Please select an answer first.

Correct answer: B

The correct answer is 8.

  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 40, and there are 5 values, so the mean is 40/5=840/5=8.
  3. Check the answer: The correct answer is 8.

The sum is 40, and there are 5 values, so the mean is 40/5=840/5=8.

7. QuestionMultiple choice

Which choice correctly places the modifier? Unlike the earlier model, ___.

Please select an answer first.

Correct answer: C

The correct answer is the new model uses recycled materials.

  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 new model is being compared with the earlier model, so it should directly follow the introductory phrase.
  3. Check the answer: The correct answer is the new model uses recycled materials.

The new model is being compared with the earlier model, so it should directly follow the introductory phrase.

8. QuestionMultiple choice

A passage reports that a city’s tree canopy increased after a planting program, but notes that older neighborhoods received fewer trees. What can be inferred?

Please select an answer first.

Correct answer: D

The correct answer is The program improved overall canopy coverage but did not benefit all neighborhoods equally..

  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 passage combines an overall increase with an unequal distribution, supporting a qualified conclusion.
  3. Check the answer: The correct answer is The program improved overall canopy coverage but did not benefit all neighborhoods equally..

The passage combines an overall increase with an unequal distribution, supporting a qualified conclusion.

9. QuestionMultiple choice

Which expression is equivalent to x2−9x^2-9?

Please select an answer first.

Correct answer: A

The correct answer is (x−3)(x+3)(x-3)(x+3).

  1. Identify the ACT skill: Determine whether the question tests English conventions, rhetoric, Math, Reading, or Science reasoning.
  2. Use the passage or model: This is a difference of squares: x2−32=(x−3)(x+3)x^2-3^2=(x-3)(x+3).
  3. Check the answer: The correct answer is (x−3)(x+3)(x-3)(x+3).

This is a difference of squares: x2−32=(x−3)(x+3)x^2-3^2=(x-3)(x+3).

10. QuestionMultiple choice

In context, the word feasible most nearly means

Please select an answer first.

Correct answer: B

The correct answer is possible and practical.

  1. Identify the ACT skill: Determine whether the question tests English conventions, rhetoric, Math, Reading, or Science reasoning.
  2. Use the passage or model: Feasible describes an option that can realistically be carried out.
  3. Check the answer: The correct answer is possible and practical.

Feasible describes an option that can realistically be carried out.

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