Adding and Subtracting Fractions with Unlike Denominators Flashcard

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 term 'denominator' mean?

Back

The denominator is the bottom part of a fraction that indicates how many equal parts the whole is divided into.

Front

What does the term 'numerator' mean?

Back

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

Front

What is the least common denominator (LCD)?

Back

The least common denominator is the smallest number that can be used as a common denominator for two or more fractions.

Front

How do you find the least common denominator for 2/9 and 5/6?

Back

The least common denominator for 2/9 and 5/6 is 18.

Front

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

Back

The first step is to find the least common denominator (LCD) for the fractions.

Front

How do you add the fractions 2/5 and 1/3?

Back

To add 2/5 and 1/3, convert them to have a common denominator (15), resulting in 6/15 + 5/15 = 11/15.

Front

What is the process for subtracting fractions with unlike denominators?

Back

To subtract fractions with unlike denominators, find the least common denominator, convert the fractions, and then subtract the numerators.

Front

How do you subtract 7/8 and 2/9?

Back

To subtract 7/8 and 2/9, find the LCD (72), convert to 63/72 - 16/72 = 53/72.

Front

What is the least common denominator for 3/7 and 4/9?

Back

The least common denominator for 3/7 and 4/9 is 63.