add/subtract fractions

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 1/5 and 5/6?

Back

The least common multiple (LCM) of the denominators 5 and 6 is 30, so 30 is a common denominator.

Front

What is the sum of 1/2 + 1/3 + 1/5?

Back

The sum is 31/30.

Front

What do you need to add or subtract fractions?

Back

You need common denominators to add or subtract fractions.

Front

What is a common denominator for 1/2, 1/3, and 1/4?

Back

The least common multiple of 2, 3, and 4 is 12.

Front

How do you add fractions with different denominators?

Back

Convert them to have a common denominator, then add the numerators.

Front

What is the first step in adding 5/9 and 1/6?

Back

Find a common denominator, which is 18.

Front

What is 5/9 + 1/6?

Back

The sum is 13/18.

Front

Can you add fractions with different denominators directly?

Back

No, you must first find a common denominator.

Front

What is the definition of a fraction?

Back

A fraction represents a part of a whole and consists of a numerator and a denominator.