Chapter 3: Problem 4
Change each mixed number to an improper fraction. $$7 \frac{1}{2}$$
Short Answer
Expert verified
The mixed number \(7 \frac{1}{2}\) as an improper fraction is \(\frac{15}{2}\).
Step by step solution
01
Understand the Mixed Number
The mixed number given is \(7 \frac{1}{2}\), where 7 is the whole number and \(\frac{1}{2}\) is the fractional part. Our goal is to convert this mixed number into an improper fraction.
02
Multiply Whole Number by Denominator
For the mixed number \(7 \frac{1}{2}\), multiply the whole number by the denominator of the fractional part: \(7 \times 2 = 14\).
03
Add the Numerator
Take the result from Step 2 and add the numerator of the fractional part: \(14 + 1 = 15\).
04
Form the Improper Fraction
Place the sum from Step 3 over the original denominator: the improper fraction is \(\frac{15}{2}\).
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Key Concepts
These are the key concepts you need to understand to accurately answer the question.
Improper Fractions
Improper fractions might initially sound a bit confusing, but they are just a type of fraction. An improper fraction is simply a fraction where the numerator (the top part) is greater than or equal to the denominator (the bottom part). This is different from a proper fraction, where the numerator is less than the denominator. For example, in the improper fraction \( \frac{15}{2} \):
- 15 is the numerator
- 2 is the denominator
- The numerator is larger than the denominator
Fractions
Fractions are a fundamental concept in mathematics, representing parts of a whole. A fraction consists of two parts:
- The numerator, which tells you how many parts we have
- The denominator, which tells you how many parts make up a whole
- Proper Fractions: Where the numerator is less than the denominator, like \( \frac{3}{4} \).
- Improper Fractions: Where the numerator is greater than the denominator, like \( \frac{15}{2} \).
- Mixed Numbers: A combination of a whole number and a fractional part, like \( 7\frac{1}{2} \).
Convert Mixed Numbers to Improper Fractions
Converting mixed numbers to improper fractions is a straightforward process and can be done in a few simple steps. This can help when performing operations like addition or subtraction with fractions or mixed numbers. Here’s how it works:1. **Identify the whole number and the fractional part** of the mixed number. For example, in \( 7\frac{1}{2} \), 7 is the whole number, and \( \frac{1}{2} \) is the fractional part.2. **Multiply the whole number by the denominator of the fraction.** This tells you how many parts the whole number represents if each whole is split into equal-sized parts defined by the denominator. With \( 7 \times 2 = 14 \), it shows that 7 wholes are equivalent to 14 halves.3. **Add the numerator of the fractional part** to the result from step 2. This step adds any additional parts above the whole numbers. So, \( 14 + 1 = 15 \).4. **Write this result as the new numerator**, keeping the original denominator from the fractional part. So, the mixed number \( 7\frac{1}{2} \) becomes the improper fraction \( \frac{15}{2} \).By practicing these steps, you can easily and accurately switch between mixed numbers and improper fractions, making calculations easier.