Fractions of a Set introduction

Front

What is a fraction?

Back

A fraction represents a part of a whole. It is written as two numbers separated by a line, like 1/2, where the top number is the part and the bottom number is the whole.

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CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Front

What does the top number in a fraction represent?

Back

The top number is called the numerator. It shows how many parts we have.

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CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Front

What does the bottom number in a fraction represent?

Back

The bottom number is called the denominator. It shows how many equal parts the whole is divided into.

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CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Front

If there are 8 apples and 2 are red, what fraction of the apples are red?

Back

The fraction of red apples is 2/8, which simplifies to 1/4.

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CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Front

What is the fraction of shaded areas if 3 out of 5 parts are shaded?

Back

The fraction of shaded areas is 3/5.

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CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Front

How do you find a fraction of a set?

Back

To find a fraction of a set, multiply the total number of items by the numerator and then divide by the denominator.

Front

If Silvia has 10 dresses and half are red, how many red dresses does she have?

Back

Silvia has 5 red dresses.

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CCSS.3.OA.A.3

Front

What fraction of 12 tennis balls is 4 tennis balls?

Back

The fraction is 4/12, which simplifies to 1/3.

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CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Front

What is an equivalent fraction?

Back

An equivalent fraction is a fraction that represents the same part of a whole, like 1/2 and 2/4.

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CCSS.3.NF.A.3A

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CCSS.4.NF.A.1

Front

If 6 out of 10 students like pizza, what fraction of students like pizza?

Back

The fraction is 6/10, which simplifies to 3/5.

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CCSS.3.NF.A.1

CCSS.3.NF.A.2B