Adding & Subtracting Fractions

Front

What is a fraction?

Back

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

Front

What is the numerator in a fraction?

Back

The numerator is the top number in a fraction that indicates how many parts of the whole are being considered.

Front

What is the denominator in a fraction?

Back

The denominator is the bottom number in a fraction that indicates the total number of equal parts the whole is divided into.

Front

What does it mean to add fractions?

Back

To add fractions, they must have a common denominator, allowing you to combine the numerators while keeping the denominator the same.

Front

What does it mean to subtract fractions?

Back

To subtract fractions, they must have a common denominator, allowing you to subtract the numerators while keeping the denominator the same.

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

The least common denominator (LCD) is the smallest multiple that two or more denominators share.

Front

What is the least common denominator of 1/3 and 1/4?

Back

The least common denominator of 1/3 and 1/4 is 12.

Front

Can you add fractions with different denominators?

Back

No, you cannot add fractions with different denominators without first finding a common denominator.

Front

What is the first step in adding 2/5 and 1/3?

Back

The first step is to find the least common denominator (LCD), which is 15.