SAT / ACT Prep Online Guides and Tips

The Hardest ACT Math Question Types

You’ve studied and now you’re geared up for the ACT math section (whoo!). But are you ready to take on the most challenging math questions the ACT has to offer?

If you're up for the challenge, preparation starts by understanding the toughest question types you'll face on the ACT. So if you’ve got your heart set on that perfect score (or you’re just really curious to see what the most difficult questions will be), then this is the guide for you.

We’ve put together what we believe to be the most most difficult math question types the ACT has given to students in the past 10 years, complete with strategies and answer explanations for each. These are all real ACT math questions, so understanding and studying them is one of the best ways to improve your current ACT score and knock it out of the park on test day.

Let's dive in!

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7 Most Common Mistakes on ACT Math & How to Avoid Them

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Posted by Dora Seigel

ACT Math

I've tutored many students on the ACT Math section, and they often found it frustrating. Some struggled because they considered themselves better English students and felt overwhelmed by the content and pacing of ACT Math. Others found that even though they considered themselves strong math students, they had a hard time getting the score they wanted in the ACT Math section. But all these students typically made the same types of mistakes.

In this article, I’ll go over the seven most common mistakes students make on the ACT Math section and how to avoid them.

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The Basic Guide to Integers on ACT Math

"Let $x$ and $y$ be integers such that ..."

"If $y$ is a positive integer, what is ... ?"

If you've taken the ACT or an ACT practice test, these types of math questions might look familiar to you. You've likely come across several questions on the ACT that mention the word "integer." And if you don't know what this term means, these problems will be difficult to solve.

Questions involving integers are common on ACT Math, so it's important to have a solid grasp of them as you prepare for the test. What are integers and how do they fit into the larger ACT Math picture?

This article will be your guide to basic integers for the ACT, going over what they are, how they change, and how you'll see them used on the test. For the more advanced integer concepts, including absolute values, exponents, roots, and more, refer to our advanced guide to ACT integers.

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Complete List of FREE ACT Math Practice Questions

Whether you're on a budget or just want to see what kinds of ACT Math study materials you can access for free, you've come to the right place. Though the internet is chock-full of ACT resources of dubious quality, we've collected and put together only the highest quality free ACT Math study material available.

So let's jump right in!

Note: For guides and reviews of the best for-pay ACT study, check out our list of ACT study links, which includes all official practice tests, and our top picks for ACT prep books.

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Best ACT Math Practice Tests: How to Find and Use Them

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Posted by Dora Seigel

ACT Math

Whatever your ACT Math prep plan, whether you're doing self-study, a class, or working with a tutor, you need to be working with real ACT Math practice materials. The ACT Math test will be unlike any other Math test you've taken. You need to work with the real material to get used to the pacing and style of this unique test. In this guide, I'll let you know where to find free and paid official ACT Math practice tests.

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Probability Questions on ACT Math: Strategies and Practice

What is the probability that you’ll toss a coin and get heads? What about twice in a row? Three times? Probability questions ask you determine the likelihood that an event or any number of events is to occur, and the more you practice, the better your odds will be at mastering these types of questions on the ACT (see what we did there?).

This will be your complete guide to probability on the ACT—how probability works, the different types of probability questions you’ll see on the test, and the steps you’ll need to take to solve them.

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Algebra Functions on ACT Math: Lesson and Practice Questions

Functions. Just hearing the word is enough to send some students running for the hills. But never fear! Though function problems are considered some of the more challenging questions on the ACT, this is only due to the fact that most of you will be far more used to dealing with other math topics (like fractions, exponents, or circles) than you are functions.

On the ACT, question difficulty is categorized by how familiar you are likely to be with any given question, and the only way to combat this challenge is to practice and get used to dealing with questions that are a little less familiar to you. You will generally see 3-4 function questions on any given ACT, so for those of you who are not yet comfortable with functions (or just want a tune up), this guide is for you.

This will be your complete guide to ACT functions. We'll walk you through exactly what functions mean, how to use, manipulate, and identify them, and exactly what kind of function problems you'll see on the ACT.

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SAT Math vs ACT Math: What's the Difference?

Which is better/easier/faster—the SAT Math section or the ACT Math section? How does each stack up over the course of the entire test? Most importantly, which math section is right for you?

We’ll break down both the similarities and differences in this SAT Math vs ACT Math guide and help you decide which standardized test suits you better.

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Guide to ACT Calculators: Expert Tips

Knowing when where and how to best use a calculator on the ACT can be tricky. You are allowed to bring a calculator on test day (none will be provided for you), and it can mean the difference of several points on the ACT to have a calculator versus having none.

But what kind of calculator should you bring and how should you make best use of it during the test? In this guide, we’ll cover everything you need to know about calculators on the ACT, from when you're allowed to use them, to what kinds are allowed, to how to avoid the most common ACT calculator mistakes.

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ACT Trigonometry: The Complete Guide

Trigonometry is the branch of math that deals with right triangles and the relationships between their sides and angles. (The word "trig" is related to the word "triangle," to help you remember.)

There will generally be around 4-6 questions questions on the ACT that deal with trigonometry (the official ACT guidelines say that trigonometry problems make up 7% of the test). They may seem complicated at first glance, but most of them boil down to a few simple concepts.

This article will be your comprehensive guide to the trigonometry you’ll need to know for the ACT. We’ll take you through the meaning of trigonometry, the formulas and understandings you’ll need to know, and how to tackle some of the most difficult ACT trig problems.

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The 31 Critical ACT Math Formulas You MUST Know

The two biggest challenges of ACT Math are the time crunch—the math test has 60 questions in 60 minutes!—and the fact that the test doesn’t provide you with any formulas. All the formulas and math knowledge for the ACT comes from what you’ve learned and memorized.

In this complete list of critical formulas you'll need on the ACT, I'll lay out every formula you must have memorized before test day, as well as explanations for how to use them and what they mean. I'll also show you which formulas you should prioritize memorizing (the ones that are needed for multiple questions) and which ones you should memorize only when you've got everything else nailed down tight.

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3 Expert Tips for Using the Unit Circle

If you’re studying trig or calculus—or getting ready to—you’ll need to get familiar with the unit circle. The unit circle is an essential tool used to solve for the sine, cosine, and tangent of an angle. But how does it work? And what information do you need to know in order to use it?

In this article, we explain what the unit circle is and why you should know it. We also give you three tips to help you remember how to use the unit circle.

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The Ultimate ACT Math Prep Guide: Strategies, Topics, and Tips

We at PrepScholar believe in providing you with the highest quality ACT study material. We've put together a detailed, entirely free guide for your ACT math prep right here. This is the best, most comprehensive guide to the ACT Math section available anywhere. To make this article, we brought all of our top ACT Math guides together in one place.

The path to mastering the ACT is challenging, but if you're dedicated to doing your best on the test and are ready to commit your time and energy to improving your score, using our guides can help you reach your greatest potential!

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Coordinate Geometry on ACT Math: Strategies and Practice

Coordinate geometry is a big focus on the ACT math section, and you’ll need to know its many facets in order to tackle the variety of coordinate geometry questions you’ll see on the test. Luckily, coordinate geometry is not difficult to visualize or wrap your head around once you know the basics. And we are here to walk you through them.

There will usually be three questions on any given ACT that involve points alone, and another two to three questions that will involve lines and slopes and/or rotations, reflections, or translations. These topics are tested by about 10% of your ACT math questions, so it is a good idea to understand the ins and outs of coordinate geometry before you tackle the test.

This article will be your complete guide to points and the building blocks for coordinate geometry: I will explain how to find and manipulate points, distances, and midpoints, and give you strategies for solving these types of questions on the ACT.

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How to Improve Low ACT Math Scores: 9 Tips From a Perfect Scorer

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Posted by Allen Cheng

ACT Math

Are you struggling with ACT Math scores between 14-24? You're not alone - hundreds of thousands of other students are scoring in this range. But many don't know the best ways to break out of this score range and get 26+ on the ACT.

Here we'll discuss how to improve ACT Math score effectively, and why it's so important to do so. Put these principles to work and I'm confident you'll be able to improve your score.

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