Adding and Subtracting Fractions (4.NF.3)

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

What does it mean to add fractions?

Back

Adding fractions means combining the parts represented by the fractions. If the denominators are the same, add the numerators. If they are different, find a common denominator first.

Front

What does it mean to subtract fractions?

Back

Subtracting fractions means taking away the parts represented by the second fraction from the first. If the denominators are the same, subtract the numerators. If they are different, find a common denominator first.

Front

How do you find a common denominator?

Back

To find a common denominator, identify the least common multiple (LCM) of the denominators of the fractions you are working with.

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 may be different.

Front

How do you simplify a fraction?

Back

To simplify a fraction, divide both the numerator and the denominator by their greatest common factor (GCF).

Front

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

Back

1/4 + 1/4 = 2/4 = 1/2.

Front

What is the difference of 3/5 - 1/5?

Back

3/5 - 1/5 = 2/5.

Front

If you have 2/3 of a pizza and eat 1/3, how much is left?

Back

2/3 - 1/3 = 1/3 of the pizza is left.

Front

What is 1/2 + 1/4?

Back

1/2 + 1/4 = 2/4 + 1/4 = 3/4.