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.

Front

How do you subtract mixed numbers?

Back

To subtract mixed numbers, first subtract the whole numbers, then subtract the fractions. If the fraction of the top number is smaller than the bottom, borrow from the whole number.

Front

What is the first step in subtracting 2 7/8 from 3 3/8?

Back

Convert the mixed numbers to improper fractions if necessary.

Front

What is 3 3/8 as an improper fraction?

Back

3 3/8 = 27/8.

Front

What is 2 7/8 as an improper fraction?

Back

2 7/8 = 23/8.

Front

How do you find a common denominator for 8 and 8?

Back

The common denominator is 8.

Front

What is 27/8 - 23/8?

Back

27/8 - 23/8 = 4/8.

Front

What is 4/8 simplified?

Back

4/8 simplifies to 1/2.

Front

If a baker has 1 5/8 bars left after using 3 7/8 bars, how do you find the total she started with?

Back

Add the bars used and the bars left: 3 7/8 + 1 5/8.

Front

What is 3 7/8 + 1 5/8?

Back

3 7/8 + 1 5/8 = 5 6/8, which simplifies to 6 bars.