Adding and Subtracting Fractions 4th grade

Front

What is a fraction?

Back

A fraction represents a part of a whole. It 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 the numerator in a fraction represent?

Back

The numerator represents the number of parts we have.

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Front

What does the denominator in a fraction represent?

Back

The denominator represents the total number of equal parts the whole is divided into.

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Front

How do you add fractions with the same denominator?

Back

Add the numerators together and keep the denominator the same.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

How do you subtract fractions with the same denominator?

Back

Subtract the numerators and keep the denominator the same.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

What do you need to do before adding or subtracting fractions with different denominators?

Back

You need to find a common denominator.

Tags

CCSS.7.NS.A.1C

Front

What is a common denominator?

Back

A common denominator is a number that is a multiple of the denominators of the fractions you are adding or subtracting.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

If you have 1/4 and 1/4, what is the sum?

Back

1/4 + 1/4 = 2/4, which simplifies to 1/2.

Tags

CCSS.4.NF.B.3A

Front

If you have 3/5 and 1/5, what is the sum?

Back

3/5 + 1/5 = 4/5.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

If you have 3/4 and you eat 1/4, how much is left?

Back

3/4 - 1/4 = 2/4, which simplifies to 1/2.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D