Add and Subtract Fractions with Unlike Denominators

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

How do you find a common denominator for 1/2, 1/3, and 1/4?

Back

To find a common denominator, list the multiples of each denominator (2, 3, 4) and find the least common multiple (LCM). The LCM of 2, 3, and 4 is 12.

Front

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

Back

The first step is to find a common denominator for the fractions.

Front

What is 6/7 - 2/3?

Back

4/21

Front

What is the process to add fractions with unlike denominators?

Back

1. Find a common denominator. 2. Convert each fraction to an equivalent fraction with the common denominator. 3. Add the numerators and keep the common denominator.

Front

What is 3/4 + 2/8?

Back

1

Front

How do you add mixed numbers?

Back

1. Add the whole numbers. 2. Add the fractions. 3. If the fraction is improper, convert it to a mixed number.

Front

What is 5 2/3 + 4 3/5?

Back

10 4/15 hours

Front

What is the total fraction of laundry Tim did if he did 1/12 on Sunday and 1/4 on Saturday?

Back

1/3 loads done

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.