Adding and Subtracting Mixed Numbers

Front

What is a mixed number?

Back

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

Tags

CCSS.3.NF.A.3C

Front

How do you add mixed numbers?

Back

To add mixed numbers, first add the whole numbers, then add the fractions, and if necessary, convert to a mixed number.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What is the first step in subtracting mixed numbers?

Back

The first step is to find a common denominator for the fractions.

Tags

CCSS.7.NS.A.1C

Front

Why can't we just add the numerators and denominators when adding fractions with different denominators?

Back

Because the size of the pieces is different.

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.

Front

How do you find the lowest common denominator (LCD)?

Back

To find the LCD, list the multiples of each denominator and find the smallest multiple they share.

Front

What is the result of 6½ - 2⅔?

Back

3 5/6.

Tags

CCSS.7.NS.A.1C

Front

What is the result of 8 4/5 + 9 1/10?

Back

17 9/10.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

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

Back

5 7/12.

Tags

CCSS.7.NS.A.1C

Front

What is the result of 8 5/7 - 7 2/3?

Back

1 1/21.

Tags

CCSS.7.NS.A.1C