Adding and subtracting fractions

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CCSS.4.NF.B.3A

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CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

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CCSS.5.NF.A.1

CCSS.5.NF.A.2

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CCSS.5.NF.A.1

CCSS.5.NF.A.2

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What is an improper fraction?

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A fraction where the numerator is greater than or equal to the denominator.

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CCSS.3.NF.A.3C

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What is a proper fraction?

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A fraction where the numerator is less than the denominator.

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CCSS.3.NF.A.1

CCSS.3.NF.A.2B

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How do you add fractions with different denominators?

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Find a common denominator, convert the fractions, then add the numerators.

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CCSS.5.NF.A.1

CCSS.5.NF.A.2

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How do you subtract fractions with different denominators?

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Find a common denominator, convert the fractions, then subtract the numerators.

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CCSS.5.NF.A.1

CCSS.5.NF.A.2

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What is the least common multiple (LCM) of 4 and 6?

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12, which is used to find a common denominator.

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