Adding Mixed Numbers with UnLike Denominators Flashcard

Front

What is a mixed number?

Back

A mixed number is a whole number combined with a fraction, such as 3 1/2.

Tags

CCSS.3.NF.A.3C

Front

What does it mean to add mixed numbers with unlike denominators?

Back

It means to add mixed numbers that have different denominators, requiring a common denominator to be found.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

How do you find a common denominator for 1/2 and 3/4?

Back

The least common denominator (LCD) of 1/2 and 3/4 is 4.

Front

What is the first step in adding mixed numbers?

Back

Convert the mixed numbers to improper fractions.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

Convert 3 1/2 to an improper fraction.

Back

3 1/2 = 7/2.

Front

Convert 2 3/4 to an improper fraction.

Back

2 3/4 = 11/4.

Front

What is the sum of 7/2 and 11/4?

Back

The sum is 25/4 or 6 1/4.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

How do you convert an improper fraction back to a mixed number?

Back

Divide the numerator by the denominator; the quotient is the whole number, and the remainder is the new numerator.

Front

What is the sum of 9 1/2 and 7 3/4?

Back

The sum is 17 1/4.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

If you add 4 2/3 and 3 1/3, what is the result?

Back

The result is 7 1/3.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D