ACT Math Flashcards (Free Online: Formulas, Terms & Concepts)
Free ACT Math review
Lock in every key ACT Math formula, term, and concept with a free, interactive flashcard deck covering numbers, fractions and percents, ratios and proportions, exponents and roots, algebra, functions, coordinate geometry, geometry, trigonometry, data and statistics.
Each card shows the rule or definition, a short explanation, and many include a quick diagram. Flip a card, filter by topic or card type, shuffle, and mark what you know so the cards you miss come back for review.
101flashcards
11topics covered
30cards with a diagram
Freeonline, progress saved
Original price was: $109.99.$54.99Current price is: $54.99.
What These ACT Math Flashcards Cover
This free deck collects the formulas, key terms, and concepts students use across the whole ACT Math course, organized into 11 topics. Use the dropdown to study one topic at a time, or shuffle the full deck for mixed review before a test.
| Topic | Cards | What students review |
|---|---|---|
| Numbers | 11 cards | Integers, factors, primes, GCF and LCM, order of operations. |
| Fractions & Percents | 7 cards | Fraction operations, percent of a number, percent of change, conversions. |
| Ratios & Proportions | 5 cards | Ratios, proportions, unit conversion, simple interest, average speed. |
| Exponents & Roots | 10 cards | Exponent rules, square roots, radicals, scientific notation. |
| Algebra | 15 cards | Equations, like terms, FOIL, factoring, the quadratic formula, inequalities. |
| Functions | 7 cards | Function notation, domain and range, composition, inverses, transformations. |
| Coordinate Geometry | 8 cards | Slope, line equations, distance and midpoint, parallel and perpendicular. |
| Geometry | 17 cards | Area, perimeter, volume, the Pythagorean theorem, angle rules. |
| Trigonometry | 8 cards | Sine, cosine, tangent, the unit circle, special triangles. |
| Data & Statistics | 9 cards | Mean, median, mode, range, graphs, and probability. |
| Test Facts | 4 cards | Test format, question types, and calculator policy. |
Jump to a Topic
NumbersFractions & PercentsRatios & ProportionsExponents & RootsAlgebraFunctionsCoordinate GeometryGeometryTrigonometryData & StatisticsTest Facts
Numbers
11 cards. Integers, real numbers, absolute value, factors and primes, GCF and LCM, order of operations, the distributive property, and factorials.
Fractions & Percents
7 cards. Converting mixed numbers and improper fractions, adding, subtracting, multiplying and dividing fractions, percent of a number, percent of change, and fraction, decimal, and percent conversions.
Ratios & Proportions
5 cards. Ratios, proportions, unit conversions, simple interest, and average speed.
Exponents & Roots
10 cards. The exponent rules, including product, quotient, power, zero, negative, and fractional exponents, plus square roots, simplifying radicals, and scientific notation.
Algebra
15 cards. Variables and expressions, solving one and two step equations, combining like terms, FOIL and special products, factoring, the quadratic formula, systems, and inequalities.
Functions
7 cards. Function notation and evaluation, domain and range, composition, inverses, and transformations of graphs.
Coordinate Geometry
8 cards. Slope, slope-intercept and point-slope form, the distance and midpoint formulas, and parallel and perpendicular lines.
Geometry
17 cards. Area, perimeter, and volume formulas for common shapes, the Pythagorean theorem and triples, angle rules, and polygon interior angles.
Trigonometry
8 cards. The sine, cosine, and tangent ratios, the unit circle, special right triangles, and basic trig identities.
Data & Statistics
9 cards. Mean, median, mode, and range, reading graphs and tables, probability, and basic statistics.
Test Facts
4 cards. Quick facts about the ACT Math test, the math question types, and the calculator policy.
How to Use These ACT Math Flashcards
1
Pick one topic
Use the topic dropdown instead of facing all 101 cards at once. Start with the topics you find hardest.
2
Original price was: $29.99.$16.99Current price is: $16.99.
Flip, then mark
Read the front, say the rule or definition out loud, then flip. Mark Know it only when you can explain it, not just recognize it.
3
Practice right away
After a set, solve a few problems that use those rules. Flashcards build recall; worked practice turns them into test-day tools.
Best Order for Studying
If the deck feels like a lot, study the foundational topics first, such as numbers, fractions and percents, and exponents, then move on to algebra, geometry, and data, and review the test facts last. This moves from the skills every other topic builds on to the ones that appear in specific problem types.
Most Important Formulas and Facts to Know First
- Order of operations: the sequence that keeps every calculation consistent.
- Exponent rules: product, quotient, power, zero, and negative exponents.
- Fraction operations: and converting between fractions, decimals, and percents.
- Percent of a number and percent of change: the backbone of word problems.
- Slope and slope-intercept form: for reading and writing linear graphs.
- Area, perimeter, and volume: the core geometry formulas.
- The Pythagorean theorem: for right triangles and distance.
- Factoring and the quadratic formula: for solving quadratics.
- Mean, median, mode, and range: the four measures that summarize data.
- Probability of an event: favorable outcomes over total outcomes.
Common Mistakes These Cards Help Fix
- Ignoring order of operations and simply working left to right.
- Adding or subtracting fractions without a common denominator.
- Confusing area with perimeter, or surface area with volume.
- Flipping an inequality sign at the wrong time, instead of only when multiplying or dividing by a negative.
- Mixing up mean, median, and mode.
- Treating a negative exponent as a negative number instead of a reciprocal.
- Applying the Pythagorean theorem to triangles that are not right triangles.
Original price was: $27.99.$17.99Current price is: $17.99.
ACT Math for Beginners 2026: The Ultimate Step by Step Guide to Preparing for the ACT Math Test
Recommended when a student needs more than flashcards: a step-by-step ACT Math study path with lessons, worked examples, and practice to use alongside the deck.
- Every topic taught from the ground up, not just listed.
- Pairs naturally with these flashcards and the free practice tests.
- Great for rebuilding weak skills before a test.
View ACT Math for Beginners 2026: The Ultimate Step by Step Guide to Preparing for the ACT Math Test
Frequently Asked Questions
Are these ACT Math flashcards free?
Yes. The ACT Math flashcards are free to use online, and your progress is saved in your browser so the cards you mark for review come back later.
What is on the ACT Math flashcards?
The deck covers formulas, key terms, and concepts across 11 topics, including numbers, fractions and percents, ratios and proportions, exponents and roots, algebra, functions, coordinate geometry, geometry, trigonometry, data and statistics.
Is this a formula sheet or a flashcard deck?
It is an interactive flashcard deck built for active recall. Each card pairs the rule or definition with a short explanation, and many include a diagram, so you learn when each one applies instead of just reading a list.
Do the flashcards include diagrams?
Yes. 30 of the cards include a quick diagram, such as a number line, a labeled shape, a coordinate grid, or a right triangle.
How many cards are in the ACT Math deck?
There are 101 cards organized into 11 topics, with formula, term, and concept cards mixed in each topic.
Do these flashcards match the ACT Math test?
Yes. The formulas, terms, and concepts are aligned to the math content ACT Math students are expected to know. After memorizing them, practice full problems so the rules become solving skills.
How should students study these flashcards?
Pick one topic, flip each card and predict the answer, mark each card as Know it or Review again, then restudy the missed cards. After that, use worksheets or a practice test.
Explore more free review tools in our math flashcards hub.
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