Subtracting Fractions with Unlike Denominators

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 subtract fractions?

Back

Subtracting fractions means finding the difference between two fractions, which involves adjusting the fractions to have 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 3/4 and 1/2?

Back

The least common denominator (LCD) of 4 and 2 is 4. Convert 1/2 to 2/4 to subtract.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What is the first step in subtracting fractions with unlike 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

1/2 - 1/4 = ?

Back

1/4

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

How do you convert 1 5/8 to an improper fraction?

Back

Multiply the whole number (1) by the denominator (8) and add the numerator (5): 1*8 + 5 = 13, so 1 5/8 = 13/8.

Front

What is the result of 1 1/4 - 2/3?

Back

7/12

Tags

CCSS.7.NS.A.1C

Front

How do you subtract mixed numbers?

Back

Convert mixed numbers to improper fractions, find a common denominator, and then subtract.

Tags

CCSS.7.NS.A.1C

Front

What is the equivalent fraction of 1/2 with a denominator of 4?

Back

2/4

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1