Applying GCF and LCM to Fraction Operations 4.1c

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What is the Greatest Common Factor (GCF)?

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The GCF is the largest number that divides two or more numbers without leaving a remainder.

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What is the Least Common Multiple (LCM)?

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The LCM is the smallest number that is a multiple of two or more numbers.

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How do you find the GCF of 12 and 16?

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The GCF of 12 and 16 is 4.

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How do you find the LCM of 4 and 5?

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The LCM of 4 and 5 is 20.

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What is the first step in adding fractions with different denominators?

Back

Find the LCM of the denominators to create a common denominator.

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What is the first step in subtracting fractions with different denominators?

Back

Find the LCM of the denominators to create a common denominator.

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30.

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