Adding and Subtracting Fractions

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.1

CCSS.3.NF.A.2B

Front

What does it mean to have unlike denominators?

Back

Unlike denominators are when the bottom numbers of two or more fractions are different, making it impossible to add or subtract them directly.

Tags

CCSS.7.NS.A.1C

Front

How do you add fractions with unlike denominators?

Back

To add fractions with unlike denominators, first find a common denominator, convert the fractions, and then add the numerators.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What is the least common denominator (LCD)?

Back

The least common denominator is the smallest multiple that two or more denominators share, used to add or subtract fractions.

Front

Solve: 1/4 + 1/2

Back

3/4

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

How do you subtract fractions?

Back

To subtract fractions, ensure they have the same denominator, then subtract the numerators and keep the denominator.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

Solve: 4/5 - 1/20

Back

15/20

Tags

CCSS.7.NS.A.1C

Front

What is the first step in adding fractions?

Back

The first step is to find a common denominator if the fractions have unlike denominators.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

Solve: 8/9 - 1/3

Back

5/9

Tags

CCSS.7.NS.A.1C

Front

What is a proper fraction?

Back

A proper fraction is a fraction where the numerator is less than the denominator.

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B