Finding LCD

Front

What is the least common denominator (LCD)?

Back

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

Front

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

Back

To find the LCD, list the multiples of each denominator and find the smallest multiple that appears in both lists.

Front

Find the least common denominator of 1/5 and 1/3.

Back

15

Front

Find the least common denominator of 5/9 and 1/5.

Back

45

Front

Find the least common denominator of 1/8 and 1/3.

Back

24

Front

Find the least common denominator of 2/7 and 1/3.

Back

21

Front

What are multiples?

Back

Multiples of a number are the results of multiplying that number by whole numbers (e.g., multiples of 3 are 3, 6, 9, 12, etc.).

Front

What is a denominator in a fraction?

Back

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

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Front

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

Back

The least common denominator (LCD) is the least common multiple (LCM) of the denominators of the fractions.

Front

Why is finding the LCD important in adding fractions?

Back

Finding the LCD allows you to convert fractions to have the same denominator, making it possible to add them together.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2