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).

Tags

CCSS.3.NF.A.2B

CCSS.3.NF.A.1

Front

What does it mean to have unlike denominators?

Back

Unlike denominators are when the bottom numbers of two or more fractions are different.

Tags

CCSS.4.NF.B.3A

Front

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

Back

To find the LCD, list the multiples of each denominator and find the smallest multiple that they have in common.

Front

What is the least common denominator of 1/3 and 2/5?

Back

The least common denominator of 1/3 and 2/5 is 15.

Front

How do you convert fractions to like denominators?

Back

To convert fractions to like denominators, find the least common denominator and adjust the numerators accordingly.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

Convert 3/4 and 2/7 to like denominators.

Back

The like denominators for 3/4 and 2/7 are 28.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What is the process for subtracting fractions with unlike denominators?

Back

1. Find the least common denominator. 2. Convert the fractions to like denominators. 3. Subtract the numerators and keep the common denominator.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

Subtract 5/6 and 1/4.

Back

5/6 - 1/4 = 7/12.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What is the first step in adding or subtracting fractions?

Back

The first step is to ensure the fractions have the same denominator.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

What is the least common denominator of 4/11 and 3/8?

Back

The least common denominator for 4/11 and 3/8 is 88.