Adding and Subtracting Fractions

Front

What is a fraction?

Back

A fraction represents a part of a whole and consists of a numerator (top number) and a denominator (bottom 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 add fractions with the same denominator?

Back

Add the numerators together and keep the denominator the same. Example: 1/4 + 2/4 = (1+2)/4 = 3/4.

Front

How do you add fractions with different denominators?

Back

Find the least common denominator, convert the fractions, then add the numerators. Example: 1/3 + 1/6 = 2/6 + 1/6 = 3/6 = 1/2.

Front

What is the process for subtracting fractions?

Back

Similar to addition, ensure the denominators are the same, then subtract the numerators. Example: 3/4 - 1/4 = (3-1)/4 = 2/4 = 1/2.

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

What is a mixed number?

Back

A mixed number combines a whole number and a proper fraction, such as 1 1/4.

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 is the new numerator over the original denominator.

Front

What is the first step in adding or subtracting fractions?

Back

Ensure the denominators are the same before proceeding with addition or subtraction.

Front

What is the sum of 1/3 + 1/9?

Back

4/9.