(Add the bases, divide by two, then multiply by the height.) Logarithms Nice.īonus bonus: Check out the video below to watch ACT expert Kristin discuss 6 of the must-know ACT math formulas in greater detail:ĪCT Formulas that are Good to Know Volume and Area So, you’re really studying for two things at once. To find the factorial of any integer, multiply it by every positive integer below it, e.g.:īonus: the “Must Know” math formulas on the ACT also appear in your high school math classes. Number of desired outcomes / number of total outcomes You should also know your quadrants and where sine, cosine, and tangent are positive or negative:.Y = mx + b (where m is the slope and b is the y-intercept)Ģ l + 2 w (where l is the length and w is the width)Īpply the Pythagorean theorem twice or l 2 + w 2 + h 2 = d 2 Circles and Spheres For more practice, try these ACT math practice questions, then check out Magoosh ACT prep. This list contains the best ACT math formulas to know. ![]() ![]() Though the ACT tests different concepts on each exam, there are popular topics (like ratios!) that come up again and again. Below you will find lists of “Must Know” ACT math formulas, “Good to Know” formulas, and “Bonus” formulas to commit to memory for the ACT! Learn them all, then check out our list of ACT math topics to begin applying them! Must-Know ACT Math Formulas This means you will need to be able to recall math formulas on the ACT. ![]() Unlike the SAT, the ACT does not provide you with a list of basic math formulas to rely upon at the beginning of the ACT math test.
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