Adding & 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 convert a mixed number to an improper fraction?

Back

Multiply the whole number by the denominator, add the numerator, and place that over the original denominator.

Front

Convert 3 1/4 to an improper fraction.

Back

3 1/4 = 13/4.

Front

What is the first step to add or subtract mixed numbers?

Back

Convert them to improper fractions.

Front

What is a common denominator?

Back

A common denominator is a shared multiple of the denominators of two or more fractions.

Front

Find a common denominator for 1/3 and 1/4.

Back

The common denominator is 12.

Front

How do you add fractions with unlike denominators?

Back

Find a common denominator, convert the fractions, then add the numerators.

Front

What is the result of 1/2 + 1/3?

Back

1/2 + 1/3 = 5/6 after finding a common denominator.

Front

What is the result of 6 1/2 - 2 2/3?

Back

6 1/2 - 2 2/3 = 3 5/6.

Front

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

Back

Because the size of the pieces is different.