Adding & Subtracting Fractions

Front

What is a fraction?

Back

A fraction represents a part of a whole and consists of a numerator (top number) and a denominator (bottom number).

Front

What does it mean to add fractions?

Back

Adding fractions means combining two or more fractions to find a total. You can only add fractions with the same denominator directly.

Front

What is a common denominator?

Back

A common denominator is a shared multiple of the denominators of two or more fractions, allowing them to be added or subtracted.

Front

How do you find the least common denominator (LCD)?

Back

To find the LCD, list the multiples of each denominator and identify the smallest multiple that they share.

Front

What is the least common denominator of 1/4 and 1/6?

Back

The least common denominator is 12.

Front

Can you add fractions with different denominators directly?

Back

No, you must first convert them to have a common denominator.

Front

What is the sum of 1/2 + 1/4?

Back

The sum is 3/4.

Front

What is the difference between 3/4 and 1/2?

Back

The difference is 1/4.

Front

What is the first step in adding fractions with different denominators?

Back

The first step is to find a common denominator.

Front

If you have 2/5 + 1/10, what is the first step?

Back

The first step is to find the least common denominator, which is 10.