Adding and 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).

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Front

What does it mean to add fractions?

Back

Adding fractions involves 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.

Tags

CCSS.4.NF.B.3A

Front

What does it mean to subtract fractions?

Back

Subtracting fractions involves taking one fraction away from another. Like addition, if the denominators are the same, subtract the numerators. If they are different, find a common denominator first.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

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 adding or subtracting.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What is an improper fraction?

Back

An improper fraction is a fraction where the numerator is greater than or equal to the denominator.

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Front

What is a mixed number?

Back

A mixed number is a whole number combined with a proper fraction, such as 2 1/2.

Tags

CCSS.3.NF.A.3C

Front

How do you convert an improper fraction to a mixed number?

Back

Divide the numerator by the denominator. The quotient is the whole number, and the remainder over the original denominator is the fraction.

Front

What is the first step in adding or subtracting mixed numbers?

Back

Convert the mixed numbers to improper fractions before performing the addition or subtraction.

Tags

CCSS.7.NS.A.1C

Front

What is the result of 8 2/4 - 3 2/3?

Back

4 5/6.

Tags

CCSS.7.NS.A.1C

Front

What is the result of 6 2/4 - 2 2/5?

Back

4 1/10.

Tags

CCSS.7.NS.A.1C