Sums of Unit Fractions

Front

What is a unit fraction?

Back

A unit fraction is a fraction where the numerator is 1 and the denominator is a positive integer.

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2A

Front

How do you add two fractions with the same denominator?

Back

To add two fractions with the same denominator, you add the numerators and keep the denominator the same.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

What is the sum of 1/5 and 1/5?

Back

The sum of 1/5 and 1/5 is 2/5.

Tags

CCSS.4.NF.B.3A

Front

If you have 1/2 of a sandwich and someone else has 1/2 of the same sandwich, what is the total amount of sandwich?

Back

The total amount of sandwich is 1/2 + 1/2 = 1.

Tags

CCSS.4.NF.B.3A

Front

What is the result of adding 1/8 four times?

Back

The result of adding 1/8 four times is 4/8, which simplifies to 1/2.

Tags

CCSS.4.NF.B.3A

Front

How do you find the total of several unit fractions?

Back

To find the total of several unit fractions, you add their numerators and keep the common denominator.

Tags

CCSS.4.NF.B.3A

Front

What is the sum of 1/7 from four different people?

Back

The sum of 1/7 from four different people is 4/7.

Tags

CCSS.4.NF.B.3A

Front

What is the process for adding fractions with different denominators?

Back

To add fractions with different denominators, 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 importance of a common denominator in fraction addition?

Back

A common denominator allows fractions to be expressed in the same terms, making it possible to add them accurately.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

Can you give an example of adding fractions with different denominators?

Back

For example, to add 1/4 and 1/6, find a common denominator (12), convert to 3/12 and 2/12, then add to get 5/12.

Tags

CCSS.7.NS.A.1C