Adding & Subtracting Fractions w/ Unlike Denominators

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).

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CCSS.3.NF.A.2B

CCSS.3.NF.A.1

Front

What does it mean to have unlike denominators?

Back

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CCSS.5.NF.B.5B

Front

How do you add fractions with unlike denominators?

Back

To add fractions with unlike denominators, first find a common denominator, convert each fraction, and then add the numerators.

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CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What is the least common denominator (LCD)?

Back

The least common denominator is the smallest multiple that two or more denominators share. It is used to add or subtract fractions.

Front

Back

The first step is to find the least common denominator (LCD) of 8 and 3, which is 24.

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CCSS.5.NF.A.1

CCSS.5.NF.A.2

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Back

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CCSS.4.NF.A.1

CCSS.3.NF.A.3B

Front

Back

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CCSS.4.NF.A.1

CCSS.3.NF.A.3B

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Back

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CCSS.4.NF.B.3D

CCSS.4.NF.B.3C

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CCSS.7.NS.A.1C

Front

What is the importance of simplifying fractions?

Back

Simplifying fractions makes them easier to understand and work with. It involves reducing the fraction to its lowest terms.