Adding & Subtracting Mixed Numbers with Unlike Denominators

Front

What is a mixed number?

Back

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

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Front

What does it mean to find the Lowest Common Denominator (LCD)?

Back

Finding the Lowest Common Denominator means identifying the smallest number that can be used as a common denominator for two or more fractions.

Front

How do you subtract mixed numbers with unlike denominators?

Back

1. Find the LCD of the fractions. 2. Convert the fractions to equivalent fractions with the LCD. 3. Subtract the whole numbers and the fractions separately.

Tags

CCSS.7.NS.A.1C

Front

How do you add mixed numbers with unlike denominators?

Back

1. Find the LCD of the fractions. 2. Convert the fractions to equivalent fractions with the LCD. 3. Add the whole numbers and the fractions separately.

Tags

CCSS.7.NS.A.1C

Front

What is the first step in solving a subtraction problem with mixed numbers?

Back

The first step is to find the Lowest Common Denominator (LCD) for the fractions involved.

Tags

CCSS.7.NS.A.1C

Front

What is the first step in solving an addition problem with mixed numbers?

Back

The first step is to find the Lowest Common Denominator (LCD) for the fractions involved.

Tags

CCSS.7.NS.A.1C

Front

Example of finding the LCD for 1/3 and 1/4?

Back

The LCD of 1/3 and 1/4 is 12.

Front

What is the result of 5 2/8 - 1 1/6?

Back

The result is 4 2/24.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

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

Back

The result is 5 7/12.

Tags

CCSS.7.NS.A.1C

Front

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

Back

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