ACT Math Formulas

Few Formulas to Help you in ACT

The ACT test consists of four compulsory subject tests and an optional essay-writing or Writing section. These sections test the ability of a student for college-level admissions in the US and Canada. The four subject tests of the ACT are: English, Mathematics, Science and Reading.

The Mathematics section of the ACT test contains 60 multiple-choice questions that reflect the various aspects of Mathematics like algebra, trigonometry, geometry etc. Students should be well prepared with their mathematical formulae and equations before they answer this section. ACT math formulas are lists of essential formulas that will help students answer the questions of the mathematics section of the test. These formulas need to be understood and practiced before they are learnt or by-hearted.

How to make the most of your list of ACT math formulas:

  • Do not try to learn ACT math formulas but keep practicing their application through solving sums where they apply. This way, you will remember them better and longer.

  • ACT math formulas are not a restricted number of formulas. After solving sample tests on the Mathematics section of the ACT, you will come across formulas that are generally repeated or required to solve the questions. Note these down to make your own list of ACT math formulas.

  • The list of ACT math formulas that you make, may appear to be long and cumbersome but if you follow a systematic approach towards learning the formulas then you will know how easily they occur to you while you take the test.

  • You have to make it a point to apply and learn all the formulas that are associated in any way with the ACT Mathematics section's questions, to do well in the test. The test expects students to have the knack of solving sums and equations of high-school level with ease.

  • While most questions in the ACT Mathematics section are singular and unrelated to each other, some questions may be grouped as they pertain to the same set of data or illustration provided. You have to gauge whether the questions require a formula in the first place or not. Some grouped questions are solved through mere logic than the use of a formula.

  • The best way to acquire a list of math formulas that will help you in the ACT test is by solving the sample test given on the official website ( By solving the sample test you will know for sure the usages of some common ACT math formulas, and that is the best way to learn about a technical subject like Mathematics.

The official sample test is available at the link:

The following is a list of a few common ACT math formulas:

  • Circle: Its circumference is= 3.14 x diameter, The area of a circle = 3.14 x (radius)2

  • Rectangle: Its perimeter = 2(length + width), Its area = length x width

  • Volume of a cuboid= length x width x height

  • Area of triangle=1/2*base*height

  • Compound Interest: , r is rate of Interest, P is the principal and n is the number of years

  • Average=total/number of parts of the total

  • Pythagoras theorem:, where a and b are sides containing the right angle and c is the hypotenuse of a right-triangle.

  • Quadratic equation when ax2+bx+c =0 then x=-b±[√b²-4ac]/2a

  • (a+b)²= a²+2ab+b²

The above-mentioned are just a few important ACT math formulas to give you a taste of the mathematics you need to know for the ACT test. You can also procure a detailed list of ACT math formulas from the following links:

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