Add and Subtract Fractions

Front

What is a fraction?

Back

A fraction represents a part of a whole and is written as 'a/b', where 'a' is the numerator (part) and 'b' is the denominator (whole).

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. For example, 1/6 + 2/6 = (1+2)/6 = 3/6 = 1/2.

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. For example, 4/6 - 2/6 = (4-2)/6 = 2/6 = 1/3.

Front

What is the least common denominator (LCD)?

Back

The least common denominator is the smallest number that can be used as a common denominator for two or more fractions.

Front

How do you find the least common denominator for 7 and 2?

Back

The least common denominator for 7 and 2 is 14.

Front

What is an equivalent fraction?

Back

An equivalent fraction is a fraction that represents the same value as another fraction, even though the numerator and denominator are different. For example, 1/2 is equivalent to 2/4.

Front

How do you add fractions with different denominators?

Back

To add fractions with different denominators, first find the least common denominator, convert the fractions to equivalent fractions with that denominator, and then add the numerators.

Front

What is the process to subtract fractions with different denominators?

Back

To subtract fractions with different denominators, find the least common denominator, convert the fractions, and then subtract the numerators.

Front

If Carly used 1/8 cup of oil and 3/8 cup of water, how much liquid did she use in total?

Back

Carly used 1/2 cup of liquid in total.

Front

If Oscar started with 4/6 of a tank of gas and had 2/6 left, how much gas did he use?

Back

Oscar used 1/3 of a tank of gas.