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 is a common denominator?

Back

A common denominator is a number that is a multiple of the denominators of two or more fractions, allowing them to be added or subtracted.

Front

How do you find the least common denominator (LCD)?

Back

The least common denominator (LCD) is the smallest multiple that two or more denominators share. To find it, list the multiples of each denominator and identify the smallest one.

Front

What is the sum of 1/5 and 2/10?

Back

The sum is 1/5 + 2/10 = 1/5 + 1/5 = 2/5.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What is the sum of 2/3 and 1/2?

Back

The sum is 2/3 + 1/2 = 4/6 + 3/6 = 7/6 or 1 1/6.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

How do you convert mixed numbers to improper fractions?

Back

To convert a mixed number to an improper fraction, multiply the whole number by the denominator, add the numerator, and place the result over the original denominator.

Front

What is the difference between 5/6 and 1/3?

Back

The difference is 5/6 - 1/3 = 5/6 - 2/6 = 3/6 or 1/2.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

How do you simplify fractions?

Back

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

Front

What is the sum of 11/12 and 1/6?

Back

The sum is 11/12 + 1/6 = 11/12 + 2/12 = 13/12 or 1 1/12.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2