Fraction Of White Balls: A Simple Math Problem

by Alex Johnson 47 views

Have you ever encountered a problem where you need to figure out a part of a whole? This is a common type of math question, and it's super useful in everyday life! Let's dive into a classic example: Imagine you have a container filled with colorful balls. We know that 13\frac{1}{3} of the balls are red and 12\frac{1}{2} are blue. The challenge is to determine what fraction of the balls are white. This may seem tricky at first, but with a few simple steps, we can solve it together. So, grab your thinking caps, and let's get started on this mathematical adventure!

Understanding the Problem: Fractions and the Whole

Before we jump into solving, let's make sure we understand the key concepts involved. Fractions represent parts of a whole. In this case, the "whole" is the entire collection of balls in the container. We know the fractions representing the red and blue balls, and our goal is to find the fraction representing the white balls. A crucial thing to remember is that the sum of all the fractions representing the different colored balls must equal 1, because together they make up the entire container of balls. This understanding forms the foundation for our solution. Think of it like a pie chart – the entire pie represents all the balls, and the slices represent the different colors. By knowing the size of some slices, we can figure out the size of the remaining slice.

To solve this fraction problem effectively, we must first understand that the fractions given (13\frac{1}{3} and 12\frac{1}{2}) represent proportions of the total number of balls. The "whole" in this scenario represents the entirety of the balls in the container, which, in fractional terms, is represented as 1. Our task is to find out what fraction of this whole is represented by the white balls. This involves a fundamental concept in mathematics: that the sum of all parts of a whole equals the whole itself. This means that if we add the fractions of the red balls, the blue balls, and the white balls, the total should equal 1. Understanding this basic principle is key to approaching the problem logically and setting up the equation correctly. Before diving into calculations, it's always helpful to visualize the problem. Imagine a container with balls of different colors. If you know the proportion of some colors, you can deduce the proportion of the remaining color by considering how much "space" is left to fill the whole.

Step-by-Step Solution: Finding the Common Denominator

Now, let's break down the solution step-by-step. The first thing we need to do is add the fractions of the red and blue balls. We have 13\frac{1}{3} (red) + 12\frac{1}{2} (blue). To add fractions, they need to have a common denominator. A common denominator is a number that both denominators (the bottom numbers of the fractions) can divide into evenly. In this case, the smallest common denominator for 3 and 2 is 6. So, we need to convert both fractions to have a denominator of 6.

To find a common denominator for the fractions 13\frac{1}{3} and 12\frac{1}{2}, we need to identify the least common multiple (LCM) of their denominators, which are 3 and 2, respectively. The LCM is the smallest number that both 3 and 2 can divide into without leaving a remainder. In this case, the LCM of 3 and 2 is 6. This means 6 will be our common denominator. Converting fractions to have a common denominator is a crucial step in adding or subtracting them. It ensures that we are dealing with comparable parts of a whole. Think of it like trying to add apples and oranges – you can't directly add them unless you have a common unit, like "fruits." Similarly, we need a common denominator to add fractions representing different portions of the whole. Once we have the common denominator, we can easily add the fractions by simply adding their numerators (the top numbers) while keeping the denominator the same. This process makes the addition straightforward and allows us to accurately determine the combined fraction representing the red and blue balls.

Converting Fractions: Making the Calculation Easier

To convert 13\frac{1}{3} to a fraction with a denominator of 6, we multiply both the numerator (1) and the denominator (3) by 2. This gives us 1βˆ—23βˆ—2\frac{1 * 2}{3 * 2} = 26\frac{2}{6}. Similarly, to convert 12\frac{1}{2} to a fraction with a denominator of 6, we multiply both the numerator (1) and the denominator (2) by 3. This gives us 1βˆ—32βˆ—3\frac{1 * 3}{2 * 3} = 36\frac{3}{6}. Now we have 26\frac{2}{6} (red) and 36\frac{3}{6} (blue).

This process of converting fractions ensures that we are comparing like parts. By multiplying both the numerator and the denominator by the same number, we are essentially multiplying the fraction by 1 (in the form of 22\frac{2}{2} or 33\frac{3}{3}), which doesn't change its value but allows us to express it in a different form. Think of it like cutting a pizza – whether you cut it into 3 slices or 6 slices, the whole pizza remains the same. The size of each slice changes, but the total amount of pizza is constant. Similarly, when we convert fractions, we are changing the size of the individual parts (the numerators) while keeping the overall proportion the same. This conversion step is vital for performing accurate calculations with fractions, particularly when adding or subtracting them. It ensures that we are working with compatible units, making the subsequent arithmetic operations more straightforward and reliable. Mastering this technique is essential for solving various mathematical problems involving fractions and proportions.

Adding the Fractions: Red and Blue Balls Combined

Now we can add the fractions: 26\frac{2}{6} + 36\frac{3}{6}. When adding fractions with the same denominator, we simply add the numerators and keep the denominator the same. So, 2+36\frac{2 + 3}{6} = 56\frac{5}{6}. This means that 56\frac{5}{6} of the balls are either red or blue.

This step of adding the fractions representing the red and blue balls gives us the combined proportion of these colors in the container. The result, 56\frac{5}{6}, indicates that five out of every six balls are either red or blue. This combined fraction is crucial because it allows us to determine the remaining fraction representing the white balls. It's like putting together pieces of a puzzle – we've now combined the pieces representing the red and blue balls, and we can see how much space is left for the white balls. By adding fractions, we are essentially aggregating different parts of the whole to understand their combined contribution. This is a fundamental operation in mathematics with wide-ranging applications, from calculating proportions in recipes to determining shares in financial investments. The ability to accurately add fractions is a key skill in problem-solving and decision-making in various real-world scenarios.

Finding the White Balls: Subtracting from the Whole

Remember, the entire container of balls represents 1 whole. To find the fraction of white balls, we need to subtract the fraction of red and blue balls ( rac{5}{6}) from the whole (1). We can write 1 as 66\frac{6}{6} (because any number divided by itself is 1). So, we have 66\frac{6}{6} - 56\frac{5}{6}. When subtracting fractions with the same denominator, we subtract the numerators and keep the denominator the same. So, 6βˆ’56\frac{6 - 5}{6} = 16\frac{1}{6}.

This subtraction step is where we finally isolate the fraction representing the white balls. By subtracting the combined fraction of red and blue balls from the whole (represented as 1 or 66\frac{6}{6} in this case), we are essentially finding the remaining portion. Think of it like having a complete circle and removing a piece – what's left is the portion we're interested in. In this scenario, the complete circle represents all the balls, and the removed piece represents the red and blue balls. The remaining portion represents the white balls. This subtraction process highlights the inverse relationship between addition and subtraction, which is a fundamental concept in mathematics. By understanding this relationship, we can solve a variety of problems involving proportions and fractions. The result, 16\frac{1}{6}, gives us a clear and concise answer to the original question: one-sixth of the balls in the container are white.

The Answer: One-Sixth of the Balls are White

Therefore, 16\frac{1}{6} of the balls in the container are white! We successfully solved the problem by understanding fractions, finding a common denominator, adding fractions, and subtracting from the whole. You did it!

In conclusion, we've successfully navigated a classic fraction problem by breaking it down into manageable steps. By understanding the concept of fractions, finding common denominators, and performing addition and subtraction, we were able to determine that 16\frac{1}{6} of the balls in the container are white. This exercise highlights the practical application of fractions in everyday scenarios and reinforces the importance of these fundamental mathematical skills. Remember, problem-solving is a journey, and each step you take brings you closer to the solution. So, keep practicing, keep exploring, and keep your mathematical mind sharp! For further learning and practice on fractions, consider exploring resources like Khan Academy's Fractions Section. It's a great way to solidify your understanding and tackle even more challenging problems.