7th Grade Add and Subtract Mixed Numbers Extra Credit Flashcard

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 convert a mixed number to an improper fraction?

Back

Multiply the whole number by the denominator, add the numerator, and place the result over the original denominator. For example, 2 1/3 = (2*3 + 1)/3 = 7/3.

Front

What is the process for adding mixed numbers?

Back

1. Convert mixed numbers to improper fractions. 2. Find a common denominator. 3. Add the fractions. 4. Convert back to a mixed number if necessary.

Front

What is the process for subtracting mixed numbers?

Back

1. Convert mixed numbers to improper fractions. 2. Find a common denominator. 3. Subtract the fractions. 4. Convert back to a mixed number if necessary.

Front

What is a proper fraction?

Back

A proper fraction is a fraction where the numerator is less than the denominator, such as 3/4.

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 5/4.

Front

How do you simplify a mixed number?

Back

To simplify a mixed number, convert it to an improper fraction, simplify the fraction if possible, and convert back to a mixed number.

Front

What is the least common denominator (LCD)?

Back

The least common denominator is the smallest multiple that two or more denominators share, used to add or subtract fractions.

Front

How do you find the least common denominator?

Back

List the multiples of each denominator and find the smallest multiple that appears in both lists.

Front

What is the sum of 5 1/3 and 2 2/3?

Back

5 1/3 + 2 2/3 = 8.