Adding Fractions with Unlike Denominators

Front

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

Back

Find a common denominator for the fractions.

Front

How do you find a common denominator for two fractions?

Back

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

Front

What is the least common multiple (LCM) of 6 and 4?

Back

The LCM of 6 and 4 is 12.

Front

How do you convert a fraction to have a common denominator?

Back

Multiply the numerator and denominator of each fraction by the necessary factor to reach the common denominator.

Front

What is the formula for adding two fractions?

Back

(a/b) + (c/d) = (ad + bc) / (bd) where b and d are the denominators.

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

Convert the mixed number 2 1/2 to an improper fraction.

Back

2 1/2 = 5/2.

Front

What is a mixed number?

Back

A mixed number is a whole number combined with a proper fraction.

Front

Which of the following is NOT a common denominator for 1/6 and 1/4: 6, 12, or 18?

Back

18 is NOT a common denominator.

Front

What is the result of adding 1/6 and 1/4?

Back

1/6 + 1/4 = 5/12.