ACT Exam: The Math Sentence
Friday, May 30th, 2008Think the ACT exam’s math section will be easier than the SAT. Don’t count on it!
After all, you still have to handle arithmetic (and yes it’s a bit trickier than the simple addition that you learned in grade 2), algebra, geometry and trigonometry.
Arithmetic covers adding, subtracting, multiplying and dividing. But you also have to tackle average, mean, medium and mode, percents, ratios and rates, some probability, integer properties such as primes, factors, and multiples.
X and Ys. With the algebra questions you will have to simplify algebraic expressions, solve simple algebraic equations, factor of quadratic equations, work with simple roots and exponents and translate word problems from English to algebra.
Shape up for the geometry questions. You are going to need to know the properties of parallel line, triangles (especially right triangles), rectangles, squares and circles. You will also have to find the volume and surface area of boxes and cylinders and do coordinate geometry, including lines and linear equations.
Read the sines. Trigonometry will be tested. But before you go off on a tangent and freak out—there will only be four questions. At least two of them can be answered by knowing the definitions of sine, cosine, and tangent. So don’t worry of trig isn’t your best subject.
Cheat. You’re allowed to use a calculator. Use the one that you practice with because you will be more comfortable with it. You don’t need a fancy calculator. A standard four-function one is fine.
How to add it all up: Tricks and techniques
- The questions appear in the order which you probably covered them in school. So arithmetic will be first and trig questions will be last. You can work your way up to the harder stuff.
- Skip the harder questions until you’ve answered all the questions you know.
- Know the directions before the exam so you don’t have to waste precious time reading them during the test.
- Don’t over calculate. Only use the calculator after you’ve read the question and figured out how you want to solve it. If you need to punch a bunch of numbers in to answer the question, think again. You are probably going about it the wrong way.
- Work backwards. Working backwards takes advantage of the multiple choice format. All you have to do is figure out which one is right. Run the answers through the equation in the question until you find the one that works.
- Use the process of elimination. Eliminate answers that are either too big or too small.
- Plug in numbers. Especially when you have algebra questions. You can also use this method if you are working with percents, fractions and ratios and no actual values are given. Pick a simple number to replace the variable and use 100 % when dealing with percentages.
And there you have it—your ACT tutorial. Now put 2 and 2 together and score big time on your ACT exam.







