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, such as 1/2, 1/3, or 1/4.

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2A

Front

What is the numerator in a fraction?

Back

The numerator is the top number in a fraction that indicates how many parts of the whole are being considered.

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Front

What is the 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

How do you add two unit fractions with the same denominator?

Back

You add the numerators together and keep the same denominator. For example, 1/4 + 1/4 = 2/4.

Tags

CCSS.4.NF.B.3A

Front

How do you add two unit fractions with different denominators?

Back

You need to 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 sum of 1/3 + 1/3 + 1/3?

Back

The sum is 3/3, which equals 1.

Tags

CCSS.4.NF.B.3A

Front

If Jessika, Alyssa, Lauren, and MaryAlice each have 1/7 of a pizza, what is the total amount of pizza they have?

Back

They have a total of 4/7 of a pizza.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

What is the sum of 1/4 + 1/4?

Back

The sum is 2/4, which can be simplified to 1/2.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

What does the fraction 1/10 represent?

Back

1/10 represents one part of a whole that is divided into 10 equal parts.

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2A

Front

What is the sum of 1/2 + 1/2?

Back

The sum is 2/2, which equals 1.

Tags

CCSS.4.NF.B.3A