How do you subtract fractions if they have the same bottom number?

Keep the bottom the same and subtract the tops.

Add the tops and keep the bottom number the same.

Multiply the tops and bottoms together.

Subtract the bottoms and keep the tops the same.

What does it mean for two fractions to have a common denominator?

It means they share the same bottom number.

It means they share the same top number.

What's the first step when trying to add two unlike-fractions?

rewrite them as equivalent fractions with the same bottom number

rewrite them as equivalent fractions with the same top number

just add the top numbers and bottom numbers

How do you find the least common denominator for two fractions?

Find the lowest shared multiple of the denominators .

Find the product of the denominators.

Find the sum of the denominators.

Find the greatest common factor of the denominators.

Alg1 | 1-2 Add & Subtract Fractions

Interactive Video

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Mathematics

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9th Grade

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Easy

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CCSS

4.NF.B.3C, 5.NF.A.1, 3.NF.A.3B

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Emily Mulholland

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Alg1 | 1-2 Add & Subtract Fractions

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