Mastering Mixed Numbers: A Guide to Subtracting Fractions

Have you ever found yourself staring at a math problem, feeling as if you need a lifeline? It’s common, especially for students preparing for something as significant as the Kaplan Nursing Entrance Exam. One area you might stumble over is subtracting mixed numbers. So let’s unpack that and make it as straightforward as possible.

Breaking Down Mixed Numbers: What's the Deal?

So, you're faced with a problem like 17 - 15 7/12. At first glance, it may seem overwhelming. “Where do I even start?” you might ask. Here’s a little secret: converting everything into fractions can simplify your life dramatically. And this isn't just handy for nursing exams—it's a reliable math magic trick!

Step One: Get Your Whole Number in the Game

Start by turning that whole number (in this case, 17) into a mixed number format. Think of it as trying to fit into the crowd by putting your best foot forward. We can express it as 17/1. Why? Because we want all our numbers to play nice together as fractions. Now, we need to express everything in terms of twelfths to keep harmony.

Here’s how you do it: multiply 17 by 12/12 to keep its value the same. When you do the math, 17 becomes 204/12. Yay! Progress!

Step Two: Transform the Mixed Number

Next up, we tackle 15 7/12. To make our lives easier, let’s change this mixed number into an improper fraction. Remember math class? This is where you multiply the whole number (15) by the denominator (12). That gives you 180. Now, add the numerator (7): 180 + 7 results in 187. So there you have it – 15 7/12 is now 187/12.

Step Three: Time for the Big Subtraction

Now the real excitement happens. With both numbers in their fraction forms, it’s time to subtract! Here’s the deal: you'll subtract the numerators now, keeping the denominator the same. So, it goes like this: 204/12 - 187/12. Yup, that's (204 - 187)/12. When you work that out, you get 17/12, presenting the prize: your answer!

What's the Lesson?

The option that corresponds to this result is indeed 17/12. And now that you’ve successfully walked through it, congratulations—you’ve just mastered a crucial math skill!

The ability to manipulate mixed numbers and fractions is a game changer for the Kaplan Nursing Entrance Exam and beyond. The nursing field requires sharp math skills for dosage calculations, fluid management, and more, making this practice invaluable.

As students study for the nursing exam, remember to leverage tools and resources available. Websites, mobile apps, and even simple flashcards can reinforce these concepts.

Wrapping It Up

So next time you find yourself up against a tricky subtraction problem, just remember: converting your numbers into a common language helps turn that daunting equation into something manageable. Don’t shy away from math—embrace it! Who knows? You might just find you have a knack for it. Here’s to conquering mixed numbers, one subtraction at a time!