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**Question??? What is a prime factor?**

L-1.1 Take notes on this!!!! Question??? What is a prime factor? List all of the prime numbers under 20. Make a list of the prime factors of 63.

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Divisibility Rules A number is divisible by If… 2 3 5 7

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**Finding Prime Factorization**

Find the prime factorization of 81 (factor tree) Find the prime factorization of 1125 (ladder method)

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**Check yourself!!! Do u have this?**

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**Try this one!!! Use any method**

Find the prime factorization of 1470

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**Check your notes to be sure!**

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Guided Practice Open your book to page 10 and do questions 11 and 12 right now. Show all work Use the ladder method or the factor tree method.

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Check your answers

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Check your answer

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**Solving Real World Stuff!!**

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Check your answer

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Try this one too!!

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Check the answer

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Guided Practice Do questions 13 and 14 on page 11 at this time.

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Answer check!

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Check this one!

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Homework Do L-1.1 on page 12, # all

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MULT. INTEGERS 1. IF THE SIGNS ARE THE SAME THE ANSWER IS POSITIVE 2. IF THE SIGNS ARE DIFFERENT THE ANSWER IS NEGATIVE.

MULT. INTEGERS 1. IF THE SIGNS ARE THE SAME THE ANSWER IS POSITIVE 2. IF THE SIGNS ARE DIFFERENT THE ANSWER IS NEGATIVE.

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