Add and Subtract Mixed Numbers

Front

What is a mixed number?

Back

A mixed number is a whole number combined with a fraction, such as 2 1/4.

Front

How do you add mixed numbers?

Back

To add mixed numbers, first add the whole numbers, then add the fractions. If the fraction sum is improper, convert it to a mixed number.

Front

How do you subtract mixed numbers?

Back

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

Front

What is the first step in subtracting 2 1/4 - 1 3/8?

Back

Convert both mixed numbers to improper fractions: 2 1/4 = 9/4 and 1 3/8 = 11/8.

Front

What is an improper fraction?

Back

An improper fraction is a fraction where the numerator is greater than or equal to the denominator, such as 9/4.

Front

Convert 2 1/4 to an improper fraction.

Back

2 1/4 = 9/4.

Front

Convert 1 3/8 to an improper fraction.

Back

1 3/8 = 11/8.

Front

How do you find a common denominator for 4 and 8?

Back

The least common denominator (LCD) of 4 and 8 is 8.

Front

What is 9/4 - 11/8?

Back

To subtract, convert 9/4 to 18/8. Then, 18/8 - 11/8 = 7/8.

Front

What is the final answer to 2 1/4 - 1 3/8?

Back

The final answer is 7/8.