Adding Fractions with Unlike Denominators

Front

What is an equivalent fraction?

Back

An equivalent fraction is a fraction that represents the same value as another fraction, even though the numerator and denominator are different. For example, 1/2 is equivalent to 2/4.

Front

How do you find the least common denominator (LCD) of two fractions?

Back

To find the least common denominator, list the multiples of each denominator and find the smallest multiple that they both share. For example, the LCD of 1/4 and 2/5 is 20.

Front

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

Back

The first step is to find the least common denominator (LCD) of the fractions.

Front

Solve: 1/3 + 1/6

Back

1/3 + 1/6 = 1/2.

Front

What do you do after finding the least common denominator?

Back

After finding the least common denominator, convert each fraction to an equivalent fraction with the LCD.

Front

Solve: 2/5 + 1/10

Back

2/5 + 1/10 = 5/10 or 1/2.

Front

What is the formula for adding fractions?

Back

The formula for adding fractions is: (a/b) + (c/d) = (a*d + b*c) / (b*d).

Front

Solve: 3/4 + 1/8

Back

3/4 + 1/8 = 7/8.

Front

What is a numerator?

Back

The numerator is the top number of a fraction that indicates how many parts of the whole are being considered.

Front

What is a denominator?

Back

The denominator is the bottom number of a fraction that indicates how many equal parts the whole is divided into.