Adding/Subtracting Fractions

Front

What is a common denominator?

Back

A common denominator is a number that can be used as a denominator for two or more fractions, allowing them to be added or subtracted.

Front

What is the least common multiple (LCM)?

Back

The least common multiple (LCM) is the smallest multiple that two or more numbers share. It is often used to find a common denominator for fractions.

Front

How do you find a common denominator for 2/3 and 3/4?

Back

The least common multiple of 3 and 4 is 12, so 12 is a common denominator.

Front

What do you do to the numerator when changing the denominator?

Back

You must multiply the numerator by the same number you multiplied the denominator by.

Front

When adding fractions with like denominators, what happens to the denominators?

Back

The denominators stay the same.

Front

Back

Front

What is the first step in adding fractions with different denominators?

Back

Find a common denominator.

Front

What is the formula for adding fractions?

Back

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 lowest terms, where the numerator and denominator have no common factors other than 1.