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 add fractions?

Back

Adding fractions involves combining two or more fractions to find a total. To add fractions with different denominators, you must first find a common denominator.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What is 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.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

How do you find a common denominator for 3/5 and 3/10?

Back

The least common multiple of 5 and 10 is 10, so the common denominator is 10.

Front

What is the sum of 3/5 and 3/10?

Back

9/10.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What is the process for subtracting fractions?

Back

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

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

What is the difference between 3/4 and 2/3?

Back

1/12.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

How do you convert 1/3 to a fraction with a denominator of 9?

Back

Multiply both the numerator and denominator by 3 to get 3/9.

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

Front

What is the sum of 1/3 and 1/9?

Back

4/9.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

How do you add 5/12 and 1/3?

Back

Convert 1/3 to 4/12, then add: 5/12 + 4/12 = 9/12, which simplifies to 3/4.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2