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 solving a problem involving mixed numbers?

Back

Identify whether you need to add or subtract the mixed numbers.

Front

How do you convert an improper fraction 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 least common denominator (LCD)?

Back

The least common denominator is the smallest number that can be used as a common denominator for two or more fractions.

Front

How do you find the least common denominator?

Back

List the multiples of each denominator and find the smallest multiple they share.

Front

What is an example of adding mixed numbers?

Back

Example: 1 1/2 + 2 2/3 = 4 1/6.

Front

What is an example of subtracting mixed numbers?

Back

Example: 3 3/4 - 1 1/2 = 2 1/4.

Front

What do you do if the fractions have different denominators?

Back

You must find a common denominator before adding or subtracting the fractions.