In this article, we will learn how to perform mathematical calculations with fractions.
More reading material:
- Addition of fractions
- Subtraction of fractions
- Multiplication of fractions
- Division of fractions
- Comparison of fractions
In this article, we will learn how to perform mathematical calculations with fractions.
More reading material:
Solve the following exercise:
\( \frac{1}{3}-\frac{1}{5}=\text{?} \)
We will expand or reduce the fractions to end up with two fractions with the same denominator.
A very common way to do this is by multiplying the denominators.
Only the numerators are added while the denominator remains unchanged.
Solution:
We will multiply the numerators and obtain:
Solve the following exercise:
\( \frac{2}{4}-\frac{1}{3}=\text{?} \)
Solve the following exercise:
\( \frac{3}{5}-\frac{1}{2}=\text{?} \)
Solve the following exercise:
\( \frac{3}{5}-\frac{1}{4}=\text{?} \)
We will find the common denominator by expanding, simplifying, or multiplying the denominators.
We will end up with two fractions with the same denominator.
Only the numerators are subtracted while the denominator remains unchanged.
Solution:
First step: Find the common denominator
We will multiply the denominators and obtain:
Second step: Subtract the numerators and reduce the denominator
Click here for a more in-depth explanation on subtracting fractions with more exercises.
Solve the following exercise:
\( \frac{3}{5}-\frac{1}{3}=\text{?} \)
Solve the following exercise:
\( \frac{1}{2}-\frac{1}{9}=\text{?} \)
\( \frac{4}{9}+\frac{1}{2}= \)
To multiply fractions, we will multiply numerator by numerator and denominator by denominator.
Solution:
First, we will convert the mixed number to a fraction.
We will obtain:
Now, we will multiply numerator by numerator and denominator by denominator.
We will obtain:
Click here for a deeper explanation on fraction multiplication with more exercises.
\( \frac{1}{3}+\frac{1}{6}= \)
\( \frac{3}{4}+\frac{1}{6}= \)
\( \frac{1}{2}+\frac{4}{6}= \)
We will change the operation from divide to multiply and swap places between the numerator and the denominator in the fraction that is found after the divide sign.
\( \frac{4}{5}+\frac{1}{3}= \)
\( \frac{1}{3}+\frac{1}{4}= \)
\( \frac{1}{4}+\frac{7}{8}= \)
Solution:
First step: We will convert the mixed number to a fraction.
We will obtain:
Second step: We will change the division operation to multiplication and swap places between the numerator and the denominator in the fraction that is after the division sign.
We will obtain:
Third step: We will multiply numerator by numerator and denominator by denominator.
We will obtain:
Click here for a more in-depth explanation on fraction division with more exercises.
When the numerators are equal and the denominators are different:
The larger fraction will be the one whose denominator is the smallest.
When the numerators are different and the denominators are equal:
The larger fraction will be the one whose numerator is the largest.
When both the numerators and the denominators are different:
\( \frac{1}{4}+\frac{3}{4}= \)
\( \frac{1}{2}+\frac{1}{6}= \)
Solve the following exercise:
\( \frac{1}{3}-\frac{1}{5}=\text{?} \)
We will find the common denominator by expanding, simplifying, or multiplying the denominators. (Let's remember to multiply both the numerator and the denominator)
In case there is any mixed number, we will convert it into a fraction and then, we will find the common denominator.
When obtaining two fractions with the same denominator, the larger fraction will be the one whose numerator is greater.
Solve the following exercise:
\( \frac{2}{4}-\frac{1}{3}=\text{?} \)
Solve the following exercise:
\( \frac{3}{5}-\frac{1}{2}=\text{?} \)
Solve the following exercise:
\( \frac{3}{5}-\frac{1}{4}=\text{?} \)
Place the corresponding sign
_____________________
Solution:
The numerators are equal and the denominators are different, therefore, the larger fraction will be the one whose denominator is the smallest.
Place the corresponding sign
_____________________
Solution:
The numerators are different and the denominators are the same, therefore, the larger fraction will be the one whose numerator is greater.
Solve the following exercise:
\( \frac{3}{5}-\frac{1}{3}=\text{?} \)
Solve the following exercise:
\( \frac{1}{2}-\frac{1}{9}=\text{?} \)
\( \frac{4}{9}+\frac{1}{2}= \)
Place the corresponding sign
_____________________
Solution:
We will convert the mixed numbers into fractions. We obtain:
_____________________
Now we will find the common denominator. We obtain:
_____________________
When the denominators are equal, the larger fraction will be the one whose numerator is greater.
Solve the following exercise:
To solve the problem of adding the fractions and , we follow these steps:
Therefore, when you add and , the solution is .
Solve the following exercise:
To solve this problem, let's follow these steps:
Step 1: Simplify . It simplifies to .
Step 2: The denominators are now 3 and 2. Find the least common multiple of 3 and 2, which is 6.
Step 3: Convert each fraction to have the common denominator of 6:
Step 4: Add the fractions:
Step 5: The fraction is already in its simplest form.
Therefore, the solution to the problem is .
Solve the following exercise:
To solve the problem of adding the fractions and , we will follow these steps:
Now, let’s explore each step in detail:
Step 1: The denominators are 2 and 5. A common denominator can be found by multiplying these two numbers: . Therefore, 10 is our common denominator.
Step 2: Convert each fraction to have the common denominator of 10.
- For , multiply both the numerator and the denominator by 5:
.
- For , multiply both the numerator and the denominator by 2:
.
Step 3: Add the fractions and :
Combine the numerators while keeping the common denominator:
.
Thus, .
Therefore, the sum of and is .
Solve the following exercise:
To solve the addition of fractions , follow these steps:
Thus, the sum of and is .
Solve the following exercise:
To solve the given problem of adding two fractions and , follow these steps:
The denominators of the fractions are and . Multiply these two numbers to find the common denominator: .
Convert to an equivalent fraction with a denominator of :
Convert to an equivalent fraction with a denominator of :
Now that both fractions have a common denominator, add them:
We have successfully added the fractions and obtained the result.
Therefore, the solution to the problem is .
\( \frac{1}{3}+\frac{1}{6}= \)
\( \frac{3}{4}+\frac{1}{6}= \)
\( \frac{1}{2}+\frac{4}{6}= \)