Adding and Subtracting Fractions - Unlike denominators

Front

What is the process for adding fractions with unlike denominators?

Back

1. Find the least common denominator (LCD) of the fractions. 2. Convert each fraction to an equivalent fraction with the LCD. 3. Add the numerators of the equivalent fractions. 4. Simplify the resulting fraction if possible.

Front

How do you find the least common multiple (LCM) of two numbers?

Back

To find the LCM of two numbers, list the multiples of each number and identify the smallest multiple that appears in both lists.

Front

What is the least common denominator (LCD) in fraction addition?

Back

The least common denominator (LCD) is the smallest multiple that two or more denominators share, used to convert fractions to a common base for addition or subtraction.

Front

How do you convert a fraction to an equivalent fraction?

Back

To convert a fraction to an equivalent fraction, multiply both the numerator and the denominator by the same non-zero number.

Front

What is the sum of 1/2 and 3/4?

Back

The sum of 1/2 and 3/4 is 5/4 or 1 1/4 when simplified.

Front

What is the difference between 7/9 and 2/5?

Back

The difference between 7/9 and 2/5 is 17/45.

Front

How do you subtract fractions with unlike denominators?

Back

1. Find the least common denominator (LCD). 2. Convert each fraction to an equivalent fraction with the LCD. 3. Subtract the numerators of the equivalent fractions. 4. Simplify the resulting fraction if possible.

Front

What is the equivalent expression for 6/12 + 9/12?

Back

The equivalent expression for 6/12 + 9/12 is 1/2 + 3/4.

Front

If Ginger used 1/3 of her ribbon for a wreath and 1/2 for a tree, how much ribbon is left?

Back

Ginger has 1/6 of the ribbon left after using 1/3 for a wreath and 1/2 for a tree.

Front

What is the first step in solving 3/7 + 2/5?

Back

The first step in solving 3/7 + 2/5 is to find the least common denominator (LCD) for 7 and 5.