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 the numerator in a fraction represent?

Back

The numerator indicates how many parts of the whole are being considered.

Front

What does the denominator in a fraction represent?

Back

The denominator shows the total number of equal parts the whole is divided into.

Front

What is the process of adding fractions with the same denominator?

Back

Add the numerators together and keep the denominator the same.

Front

What is the process of subtracting fractions with the same denominator?

Back

Subtract the numerators and keep the denominator the same.

Front

What do you need to add or subtract fractions with different denominators?

Back

You need to find a common denominator.

Front

What is a common denominator?

Back

A common denominator is a number that is a multiple of the denominators of the fractions being added or subtracted.

Front

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

Back

The least common denominator is the smallest multiple that both denominators share.

Front

What is the least common denominator (LCD) of 3/4 and 2/5?

Back

The LCD is 20.

Front

Can you add fractions with different denominators directly?

Back

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