Adding and Subtracting Fractions with Unlike Denominators

Front

What is the least common multiple (LCM)?

Back

The least common multiple (LCM) of two or more numbers is the smallest number that is a multiple of each of the numbers.

Front

What is the first step to adding or subtracting fractions with unlike denominators?

Back

Find the least common multiple (LCM) of the denominators.

Front

How do you convert fractions to have a common denominator?

Back

Multiply the numerator and denominator of each fraction by the same number to make the denominators equal.

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 does it mean to simplify a fraction?

Back

To simplify a fraction means to reduce it to its simplest form, where the numerator and denominator have no common factors other than 1.

Front

What is the greatest common factor (GCF)?

Back

The greatest common factor (GCF) of two or more numbers is the largest number that divides all of them without leaving a remainder.

Front

What is the process to subtract fractions?

Back

1. Find a common denominator. 2. Convert the fractions. 3. Subtract the numerators. 4. Simplify if necessary.

Front

What is the process to add fractions?

Back

1. Find a common denominator. 2. Convert the fractions. 3. Add the numerators. 4. Simplify if necessary.

Front

What is an improper fraction?

Back

An improper fraction is a fraction where the numerator is greater than or equal to the denominator.

Front

What is a mixed number?

Back

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