Adding and Subtracting Fractions

Front

What is a fraction?

Back

A fraction represents a part of a whole. It consists of a numerator (top number) and a denominator (bottom number).

Front

What does it mean to add fractions?

Back

Adding fractions means combining parts of a whole. You can only add fractions with the same denominator directly.

Front

What does it mean to subtract fractions?

Back

Subtracting fractions means taking away a part from a whole. You can only subtract fractions with the same denominator directly.

Front

How do you add fractions with the same denominator?

Back

Add the numerators together and keep the same denominator. For example, 1/4 + 2/4 = (1+2)/4 = 3/4.

Front

How do you subtract fractions with the same denominator?

Back

Subtract the numerators and keep the same denominator. For example, 3/5 - 1/5 = (3-1)/5 = 2/5.

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 a common denominator for 1/3 and 1/4?

Back

The least common multiple of 3 and 4 is 12. So, the common denominator is 12.

Front

What is the result of 1/2 + 1/2?

Back

1/2 + 1/2 = 2/2 = 1 (whole).

Front

What is the result of 3/4 - 1/4?

Back

3/4 - 1/4 = (3-1)/4 = 2/4 = 1/2.

Front

What is an improper fraction?

Back

An improper fraction is a fraction where the numerator is greater than or equal to the denominator, such as 5/4.