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6.NS.4 GCF and LCM. Warm Up 1.What is a prime number? Give the first 10 prime numbers. 2.What is a composite number? Give 3 examples. 3.Is 1 a prime or.

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Presentation on theme: "6.NS.4 GCF and LCM. Warm Up 1.What is a prime number? Give the first 10 prime numbers. 2.What is a composite number? Give 3 examples. 3.Is 1 a prime or."— Presentation transcript:

1 6.NS.4 GCF and LCM

2 Warm Up 1.What is a prime number? Give the first 10 prime numbers. 2.What is a composite number? Give 3 examples. 3.Is 1 a prime or a composite number?

3 It All Adds Up Work in table groups to complete the task provided. Discuss your method and apply a similar method to all 4 prizes. Good luck!

4 GCF Greatest Common Factor: the greatest number that is a common factor of each of two or more numbers Two Methods: List and Prime Factorization Example: Find the GCF of 36 and 48: List MethodPrime Factorization Method 36: 1, 2, 3, 4, 6, 9, 12, 18, 36 48: 1, 2, 4, 6, 8, 12, 24, 48 GCF is GCF is 2x2x3 = 12

5 GCF Practice Find the GCF using the method prescribed: List Method:Prime Factorization Method: 1)27 and 362) 160 and 550 3)8, 64 and 964) 30 and 48 5)20 and 246) 125, 40

6 Warm Up Create a new addition problem by factoring out the GCF


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