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

How do you add fractions with the same denominator?

Back

To add fractions with the same denominator, keep the denominator the same and add the numerators. For example, 1/4 + 2/4 = (1+2)/4 = 3/4.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

How do you subtract fractions with the same denominator?

Back

To subtract fractions with the same denominator, keep the denominator the same and subtract the numerators. For example, 3/5 - 1/5 = (3-1)/5 = 2/5.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

What is the least common denominator (LCD)?

Back

The least common denominator is the smallest number that can be used as a common denominator for two or more fractions.

Front

How do you add fractions with different denominators?

Back

To add fractions with different denominators, first find the least common denominator (LCD), convert the fractions, and then add the numerators.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What is the result of 4/7 - 2/7?

Back

2/7

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

What is the result of adding 1/4 and 3/4?

Back

1

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

What is the result of 2/5 + 1/5?

Back

3/5

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

What is the sum of 7/8 and 1/8?

Back

8/8 or 1.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

What is the result of 3/6 + 2/6?

Back

5/6

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D