Add and Subtract Fractions with Models (Unlike denominators)

Front

What do you need to do before adding fractions with unlike denominators?

Back

You need to find a common denominator.

Front

What is a common denominator?

Back

A common denominator is a number that is a multiple of the denominators of two or more fractions.

Front

How do you convert 1/2 to a fraction with a denominator of 6?

Back

1/2 can be converted to 3/6.

Front

What is the sum of 1/6 and 3/6?

Back

The sum is 4/6 or 2/3.

Front

Can you add fractions with unlike denominators directly?

Back

No, you cannot add unlike denominators directly.

Front

What is the first step in adding 1/4 and 1/3?

Back

Find a common denominator, which is 12.

Front

What is 1/4 + 1/3 when converted to a common denominator?

Back

1/4 + 1/3 = 3/12 + 4/12 = 7/12.

Front

What is the simplified form of 6/8?

Back

The simplified form is 3/4.

Front

What is the process of finding a common denominator called?

Back

Finding a common denominator is called 'finding equivalent fractions'.

Front

If you have 2/5 and want to add it to 1/10, what do you do first?

Back

Convert 2/5 to a fraction with a denominator of 10, which is 4/10.