Finding Least Common Denominators

Front

What is the least common denominator (LCD)?

Back

The least common denominator (LCD) is the smallest number that can be a common denominator for two or more fractions.

Front

How do you find the least common denominator for two fractions?

Back

To find the least common denominator for two fractions, list the multiples of each denominator and find the smallest multiple that they have in common.

Front

What is the least common denominator for 3 and 4?

Back

12

Front

What must you have to add and subtract fractions?

Back

Common denominators.

Front

What is an equivalent fraction?

Back

An equivalent fraction is a fraction that represents the same value as another fraction, even though the numerator and denominator are different.

Front

How do you create equivalent fractions?

Back

To create equivalent fractions, multiply or divide both the numerator and the denominator by the same non-zero number.

Front

What is the least common multiple (LCM)?

Back

The least common multiple (LCM) is the smallest multiple that is exactly divisible by two or more numbers.

Front

What is the least common denominator for 1/2, 1/3, and 1/4?

Back

12

Front

Which of these numbers could NOT be a common denominator for 1/6 and 1/4: 12, 18, 24, 36?

Back

18

Front

Why is it important to have a common denominator when adding or subtracting fractions?

Back

Having a common denominator allows you to combine the fractions easily by adding or subtracting the numerators.