Adding & 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. To add fractions with different denominators, you must first find a common denominator.

Front

What does it mean to subtract fractions?

Back

Subtracting fractions involves taking one fraction away from another. Like addition, you need a common denominator for fractions with different denominators.

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 is the smallest multiple that two or more denominators share. You can find it by listing the multiples or using the prime factorization method.

Front

What is the least common denominator for 1/3 and 1/4?

Back

The least common denominator for 1/3 and 1/4 is 12.

Front

How do you add fractions with the same denominator?

Back

To add fractions with the same denominator, keep the denominator the same and add the numerators.

Front

How do you subtract fractions with the same denominator?

Back

To subtract fractions with the same denominator, keep the denominator the same and subtract the numerators.

Front

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

Back

The sum of 1/4 and 1/4 is 2/4, which simplifies to 1/2.

Front

What is the difference between 3/5 and 1/5?

Back

The difference between 3/5 and 1/5 is 2/5.