Mastering "Look-Alike" Math Challenges on the TEAS
Avoid common pitfalls with these TEAS math concepts
Hey there, future nurses! Math on the TEAS exam can sometimes feel like a tricky puzzle, filled with look-alike pieces that almost fit. But don’t worry, we’re here to help you spot those subtle differences and ace your math section.
Prime Numbers: The Basics
Let's kick things off with prime numbers, a topic that often trips up many test-takers. Do you know which number is the smallest prime? It's 2. Yes, 2! Why? Because a prime number is one that’s only divisible by 1 and itself. Numbers like 0 and 1 don't make the cut because prime numbers must be greater than 1. Remembering that 2 is the only even prime number might just help you dodge one of those look-alike traps.
Solving Equations: One Step at a Time
Equations can seem daunting, but breaking them down into smaller steps simplifies the process. Take the equation 3x - 5 = 16. First, add 5 to both sides to get 3x = 21. Then, divide by 3 to solve for x, giving you x = 7. It's essential to follow each step systematically—skipping or rushing can lead to errors. Many students stumble on the step of dividing correctly, so double-check your work as you go.
Discounts and Sales: A Real-Life Skill
The ability to calculate discounts is not only useful on exams but in everyday shopping too. If an item originally costs $80, and there's a 25% discount, how do you find the sale price? Calculate 25% of $80 (which is $20) and subtract it from the original price to get $60. Missteps often happen here when students confuse the discount amount with the sale price. Practice calculating percentages to avoid this pitfall.
Solving Inequalities: Don’t Forget to Flip!
Inequalities can be tricky, especially when dealing with negative numbers. For the inequality 5 - 3x > 2, subtract 5 from both sides to get -3x > -3. Here’s the critical part: dividing by a negative number requires flipping the inequality sign. So, x < 1 is the correct solution. It’s easy to forget this rule, so keep it in mind to prevent common errors.
Right Triangle Angles: Quick Calculations
Triangles are all about angles adding up to 180 degrees. In a right triangle, with one 90-degree angle, the other two must add up to 90 degrees. If one of these is 35 degrees, the other must be 55 degrees (because 90 - 35 = 55). It’s vital to remember that the right angle is already fixed at 90 degrees, a detail that helps avoid incorrect calculations.
Order of Operations: PEMDAS/BODMAS
Order of operations can turn a seemingly simple problem into a challenge. For 8 divided by 2 plus 3 times 4, follow the order of operations: divide first (8 ÷ 2 = 4), then multiply (3 x 4 = 12), and finally add (4 + 12 = 16). Misapplying this order leads to incorrect answers like 20 or 32. Remember PEMDAS (Parentheses, Exponents, Multiplication and Division, Addition and Subtraction) to guide you through.
Area of a Square: Remember the Square Root
If you know the area of a square is 64 square units, what’s the side length? The side length is the square root of the area, so it's 8 units. Overshooting or undershooting usually happens when forgetting to apply the square root. Square roots are your friend here, so make sure you're comfortable with them.
Greatest Common Factor (GCF): Finding the Largest Factor
Finally, let’s talk about the greatest common factor. For numbers like 24 and 36, the GCF is the biggest number that divides both without leaving a remainder. In this case, it’s 12. Many students might pick a smaller common factor like 6, but remember to check for the largest one.
Math on the TEAS doesn't have to be intimidating. By understanding these concepts and practicing regularly, you can avoid those tricky look-alike traps and boost your confidence. Ready to put this knowledge into practice? Head over to NursingSchoolQuiz.com and take your math skills to the next level!