Adding and Subtracting Fractions with Unlike Denominators

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 in fractions?

Back

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

Tags

CCSS.4.NF.B.3A

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

How do you subtract fractions with unlike denominators?

Back

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

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What is a common denominator?

Back

A common denominator is a number that is a multiple of the denominators of two or more fractions, allowing them to be added or subtracted.

Front

What is the first step in adding or subtracting fractions?

Back

The first step is to find a common denominator for the fractions.

Tags

CCSS.7.NS.A.1C

Front

If you have 1/3 and 2/5, what is the common denominator?

Back

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

Front

What is the sum of 1/4 and 1/2?

Back

The sum of 1/4 and 1/2 is 3/4.

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Front

If you have 3/8 and 1/4, how do you subtract them?

Back

Convert 1/4 to 2/8, then subtract: 3/8 - 2/8 = 1/8.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

What is the result of adding 2/3 and 1/6?

Back

The result is 5/6.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2