Adding and Subtracting Fractions

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 add fractions?

Back

Adding fractions involves combining the parts represented by the fractions. If the denominators are the same, add the numerators. If they are different, find a common denominator first.

Front

What does it mean to subtract fractions?

Back

Subtracting fractions involves taking one fraction away from another. If the denominators are the same, subtract the numerators. If they are different, find a common denominator first.

Front

What is a common denominator?

Back

A common denominator is a shared multiple of the denominators of two or more fractions, allowing them to be added or subtracted.

Front

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

Back

The least common denominator (LCD) is the smallest multiple that is common to the denominators of two or more fractions.

Front

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

Back

1/4 + 1/4 = 2/4 or 1/2.

Front

What is the sum of 1/8 and 5/8?

Back

1/8 + 5/8 = 6/8 or 3/4.

Front

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

Back

3/4 + 1/4 = 4/4 or 1.

Front

What is the sum of 1/5 and 2/10?

Back

1/5 + 2/10 = 4/10 or 2/5 after finding the common denominator.

Front

What is the difference of 15/16 and 12/16?

Back

15/16 - 12/16 = 3/16.