Study on the fly›ACT
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ACT practice
ACT — college admissions exam (English, Math, Reading, Science)
A free study app for the ACT. Every question is chosen for where you are right now, wrong answers come back until they stick, and whole sections can be sat end to end. Works offline, no ads, no account needed.
The exam, section by section
| Section | Questions | Minutes |
|---|---|---|
| English | 50 | 35 |
| Mathematics | 45 | 50 |
| Reading | 36 | 40 |
| Science | 40 | 40 |
| Whole paper | 171 | 165 |
How it is scored
- Composite 1–36
- 4 answer options per question
What it covers
English
Run-ons and comma splices · Sentence fragments · Subject–verb agreement · Verb tense, form, and consistency · Pronoun case, agreement, and clear reference · Misplaced and dangling modifiers; adjective vs. adverb · Idioms and standard usage · Commas · Semicolons and colons · Apostrophes, dashes, and parentheses · Author's purpose and focus · Adding, deleting, and revising sentences (relevance) · Logical organization and ordering · Transitions · Introductions and conclusions · Word choice and precision (diction) · Redundancy and wordiness (concision) · Consistency of style and tone
Mathematics
Real number system and number properties · Integer and rational exponents · Radicals and roots · Complex numbers · Vectors and matrices · Fractions, decimals, and operations · Percents and percent change · Ratios, rates, and proportional relationships · Linear equations and expressions in one variable · Inequalities (linear and compound) · Systems of equations · Polynomial expressions and factoring · Quadratic equations · Radical and rational equations · Exponential relationships · Function notation and evaluating functions · Linear functions and graphs · Quadratic and polynomial functions · Radical and rational functions · Piecewise functions · Exponential and logarithmic functions · Key features and transformations of graphs · Lines, angles, and polygons · Triangles — congruence, similarity, Pythagorean theorem · Circles — arcs, sectors, angles, equations · Surface area and volume of solids · Coordinate geometry — distance, midpoint, slope, line equations · Conic sections · Right-triangle trigonometry and trig functions · Measures of center and spread · Data collection methods and study design · Bivariate data and relationships (scatterplots, correlation) · Probability and sample spaces · Counting, combinations, and permutations
Reading
Central idea, theme, and main idea · Locating and interpreting explicit details · Summarizing information · Inferences and logical conclusions · Relationships — sequential, comparative, cause-effect · Vocabulary in context (word and phrase meaning) · Rhetorical word choice and tone · Text structure · Author's purpose and perspective · Point of view · Author's claims and arguments · Fact vs. opinion · Command of evidence and support · Evaluating reasoning and argument construction · Comparing paired passages
Science
Reading values from tables, graphs, and diagrams · Recognizing relationships and trends in data · Interpolation and extrapolation · Translating between tables and graphs · Experimental design, tools, and procedures · Identifying controls, variables, and hypotheses · Comparing and interpreting results across experiments · Predicting and extending experiments · Summarizing competing hypotheses/theories · Comparing and contrasting alternative viewpoints · Evaluating support for each viewpoint · Reasoning mathematically about data · Judging validity / evaluating hypotheses · Formulating evidence-supported conclusions
Every topic, one page each
English
- Run-ons and comma splices
- Sentence fragments
- Subject–verb agreement
- Verb tense, form, and consistency
- Pronoun case, agreement, and clear reference
- Misplaced and dangling modifiers; adjective vs. adverb
- Idioms and standard usage
- Commas
- Semicolons and colons
- Apostrophes, dashes, and parentheses
- Author's purpose and focus
- Adding, deleting, and revising sentences (relevance)
- Logical organization and ordering
- Transitions
- Introductions and conclusions
- Word choice and precision (diction)
- Redundancy and wordiness (concision)
- Consistency of style and tone
Mathematics
- Real number system and number properties
- Integer and rational exponents
- Radicals and roots
- Complex numbers
- Vectors and matrices
- Fractions, decimals, and operations
- Percents and percent change
- Ratios, rates, and proportional relationships
- Linear equations and expressions in one variable
- Inequalities (linear and compound)
- Systems of equations
- Polynomial expressions and factoring
- Quadratic equations
- Radical and rational equations
- Exponential relationships
- Function notation and evaluating functions
- Linear functions and graphs
- Quadratic and polynomial functions
- Radical and rational functions
- Piecewise functions
- Exponential and logarithmic functions
- Key features and transformations of graphs
- Lines, angles, and polygons
- Triangles — congruence, similarity, Pythagorean theorem
- Circles — arcs, sectors, angles, equations
- Surface area and volume of solids
- Coordinate geometry — distance, midpoint, slope, line equations
- Conic sections
- Right-triangle trigonometry and trig functions
- Measures of center and spread
- Data collection methods and study design
- Bivariate data and relationships (scatterplots, correlation)
- Probability and sample spaces
- Counting, combinations, and permutations
Reading
- Central idea, theme, and main idea
- Locating and interpreting explicit details
- Summarizing information
- Inferences and logical conclusions
- Relationships — sequential, comparative, cause-effect
- Vocabulary in context (word and phrase meaning)
- Rhetorical word choice and tone
- Text structure
- Author's purpose and perspective
- Point of view
- Author's claims and arguments
- Fact vs. opinion
- Command of evidence and support
- Evaluating reasoning and argument construction
- Comparing paired passages
Science
- Reading values from tables, graphs, and diagrams
- Recognizing relationships and trends in data
- Interpolation and extrapolation
- Translating between tables and graphs
- Experimental design, tools, and procedures
- Identifying controls, variables, and hypotheses
- Comparing and interpreting results across experiments
- Predicting and extending experiments
- Summarizing competing hypotheses/theories
- Comparing and contrasting alternative viewpoints
- Evaluating support for each viewpoint
- Reasoning mathematically about data
- Judging validity / evaluating hypotheses
- Formulating evidence-supported conclusions
Are you taking the Science section?
ACT Science is optional. This only changes what you see — turn it back on any time and your progress is still there.
- Science — 40 questions · optional section
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