Table of Contents
What needs to happen for fractions to be able to be added or subtracted?
To add or subtract fractions they must have the same denominator (the bottom value). If the denominators are already the same then it is just a matter of either adding or subtracting the numerators (the top value). If the denominators are different then a common denominator needs to be found.
How do you add improper fractions to proper fractions?
Note: The rules for adding and subtracting improper fractions are the same as working with proper fractions. Step 1: Keep the denominator the same. Step 2: Add or subtract the numerators. Step 3: If the answer is an improper form, reduce the fraction into a mixed number.
How do you add and subtract proper fractions?
Adding and Subtracting Fractions with Different Denominators Find the lowest common denominator. Multiply the denominator by the number needed to get the LCD. Multiple the numerator by that number, too. Add (or subtract) the numerators to get your answer.
What are the steps in subtracting fractions?
There are 3 simple steps to subtract fractions. Step 1. Make sure the bottom numbers (the denominators) are the same. Step 2. Subtract the top numbers (the numerators). Put the answer over the same denominator. Step 3. Simplify the fraction (if needed).
How do you write an improper fraction?
An improper fraction is a fraction with a numerator that is larger than the denominator. To write a mixed fraction into an improper one you have to take your whole number next to your fraction, multiply that number by your denominator and then take your original numerator and add it on to your answer. Finally put the number over the denominator.
What are the rules for adding and subtracting fractions?
When adding or subtracting fractions, the denominator must be the same for both fractions in order to perform the operation. This rule makes sense because you cannot add fractions from different groups. For instance, you cannot add 1/2 and 1/4 because they represent different groups.