Finding Common Denominators

Front

What is a common denominator?

Back

A common denominator is a number that can be used as a denominator for two or more fractions, allowing them to be compared or added together.

Front

What is the least common denominator (LCD)?

Back

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

Front

How do you find the least common denominator for \( \frac{1}{8} \) and \( \frac{2}{9} \)?

Back

The least common denominator is 72.

Front

How do you find the least common denominator for \( \frac{1}{3} \) and \( \frac{4}{6} \)?

Back

The least common denominator is 6.

Front

How do you find the least common denominator for \( \frac{2}{5} \) and \( \frac{3}{7} \)?

Back

The least common denominator is 35.

Front

How do you find the least common denominator for \( \frac{1}{2} \) and \( \frac{4}{7} \)?

Back

The least common denominator is 14.

Front

How do you find the least common denominator for \( \frac{4}{11} \) and \( \frac{2}{3} \)?

Back

The least common denominator is 33.

Front

What is the first step in finding a common denominator?

Back

List the multiples of each denominator.

Front

What is the relationship between the least common multiple (LCM) and the least common denominator (LCD)?

Back

The least common denominator is the least common multiple of the denominators of the fractions.

Front

Why is it important to find a common denominator when adding fractions?

Back

Finding a common denominator allows fractions to be added or subtracted accurately.