Adding and Subtracting Fractions

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 it mean to add fractions with the same denominator?

Back

When adding fractions with the same denominator, you keep the denominator the same and add the numerators.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

What is the sum of 3/9 + 4/9?

Back

7/9

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

How do you add mixed numbers?

Back

To add mixed numbers, first add the whole numbers, then add the fractions. If the fraction sum is improper, convert it to a mixed number.

Tags

CCSS.7.NS.A.1C

Front

What is 3 1/4 + 4 2/4?

Back

7 3/4

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

What does it mean to subtract fractions?

Back

To subtract fractions, you find a common denominator, then subtract the numerators while keeping the denominator the same.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

If Kyleigh ate 1/5 of a cookie, how much is left for Noelle?

Back

4/5 of the cookie.

Tags

CCSS.4.NF.B.3A

Front

What is the sum of 4 1/3 + 2 1/3?

Back

6 2/3

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

What is the sum of 6 2/5 + 4 1/5?

Back

10 3/5

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

What is a common denominator?

Back

A common denominator is a shared multiple of the denominators of two or more fractions, used to add or subtract them.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2