Adding Unit Fractions

Front

What is a unit fraction?

Back

A unit fraction is a fraction where the numerator (top number) is 1 and the denominator (bottom number) is a positive integer. For example, 1/3 and 1/4 are unit fractions.

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2A

Front

How do you add fractions with the same denominator?

Back

To add fractions with the same denominator, keep the denominator the same and add the numerators. For example, 2/8 + 3/8 = (2+3)/8 = 5/8.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

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

Back

1/2 + 1/2 = 2/2 or 1.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

What is the sum of 1/3 + 1/3 + 1/3?

Back

1/3 + 1/3 + 1/3 = 3/3 or 1.

Tags

CCSS.4.NF.B.3A

Front

What is the sum of 3/4 + 1/4?

Back

3/4 + 1/4 = (3+1)/4 = 4/4 or 1.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

What does it mean to have a common denominator?

Back

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

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What is the first step in adding fractions with different denominators?

Back

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

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

If you have 2/12 + 3/12, what is the result?

Back

2/12 + 3/12 = (2+3)/12 = 5/12.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

What is the result of adding 2/8 and 3/8?

Back

2/8 + 3/8 = (2+3)/8 = 5/8.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

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

Back

1/4 + 1/4 + 1/4 + 1/4 = 4/4 or 1.

Tags

CCSS.4.NF.B.3A