Adding and Subtracting Mixed Numbers

Front

What is a mixed number?

Back

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

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

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

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 over the denominator is the fraction.

Front

What is the first step in subtracting mixed numbers?

Back

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

Front

What does it mean to borrow in subtraction of mixed numbers?

Back

Borrowing means taking 1 from the whole number part and converting it into a fraction to make the fraction part larger.

Front

What is a common denominator?

Back

A common denominator is a shared multiple of the denominators of two or more fractions, used to add or subtract them.

Front

How do you find a common denominator for 1/4 and 1/6?

Back

The least common multiple of 4 and 6 is 12, so the common denominator is 12.

Front

What is the sum of 2 1/3 and 3 2/3?

Back

The sum is 6.

Front

What is the difference between 5 1/2 and 2 1/4?

Back

The difference is 3 1/4.