Adding & Subtracting Fractions Word Problems

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 with unlike denominators?

Back

To add fractions with unlike denominators, you must first find a common denominator before adding the numerators.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

How do you subtract fractions?

Back

To subtract fractions, ensure they have the same 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 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 1/3 and 1/2?

Back

The least common denominator for 1/3 and 1/2 is 6.

Front

What is the first step in solving a word problem involving fractions?

Back

Read the problem carefully to identify the fractions involved and what operation (addition or subtraction) is needed.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

If Juan uses 3/4 yard of blue yarn and 1/8 yard of red yarn, how do you add these fractions?

Back

Convert 3/4 to eighths: 3/4 = 6/8. Then add: 6/8 + 1/8 = 7/8 yard.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

What is the sum of 1/3 and 1/2?

Back

To add 1/3 and 1/2, find a common denominator (6): 2/6 + 3/6 = 5/6.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

How do you convert mixed numbers to improper fractions?

Back

Multiply the whole number by the denominator, add the numerator, and place the result over the original denominator.

Front

What is a mixed number?

Back

A mixed number is a whole number combined with a proper fraction, such as 2 1/2.

Tags

CCSS.3.NF.A.3C