Adding and 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 the parts represented by the fractions. If the denominators are the same, add the numerators and keep the denominator. If they are different, find a common denominator first.

Front

What does it mean to subtract fractions?

Back

Subtracting fractions means taking one fraction away from another. If the denominators are the same, subtract the numerators and keep the denominator. If they are different, find a common denominator first.

Front

How do you find a common denominator?

Back

To find a common denominator, identify the least common multiple (LCM) of the denominators of the fractions you are adding or subtracting.

Front

What is an improper fraction?

Back

An improper fraction is a fraction where the numerator is greater than or equal to the denominator, such as 9/4.

Front

What is a mixed number?

Back

A mixed number is a whole number combined with a fraction, such as 2 1/2.

Front

How do you convert an improper fraction to a mixed number?

Back

To convert an improper fraction to a mixed number, divide the numerator by the denominator. The quotient is the whole number, and the remainder is the new numerator.

Front

What is the first step in adding or subtracting mixed numbers?

Back

The first step is to convert the mixed numbers into improper fractions.

Front

What is the result of 4 3/12 - 3 8/12?

Back

7/12.

Front

What is the result of 6 4/10 - 3 8/10?

Back

2 6/10.