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# Answer on a piece of paper and turn it in to the tray when finished.

## Presentation on theme: "Answer on a piece of paper and turn it in to the tray when finished."— Presentation transcript:

Answer on a piece of paper and turn it in to the tray when finished.
Puzzle Assessment Answer on a piece of paper and turn it in to the tray when finished.

Puzzle 13 & Puzzle 14 This number is less than 10
This number is a factor of 70 This number is a factor of 42 This number is prime This number is a factor of 60 The sum of the digits in this number is 3 This number has 2 digits One factor of this number is 4

..and really long multiplication combinations!
Prime Factorization ..and really long multiplication combinations!

Learning Goals What am I learning today? Why am I learning this?
How to find all the prime factors of a number Identify multiplication combinations and finding factors Why am I learning this? To help me understand numbers and factors of numbers How do I know when I am being successful? I can break apart factors until I get to all prime numbers I know how to find the prime factors of a given number

Guiding Question How do you know when you have found all the prime factors of a given number?

Reviewing what we have learned
Factors of Factors of 180

Using a white board: write the longest multiplication combination you can for these numbers:
120 180 210 Students share on Elmo

Quick Check Why does the longest combination you can make involve only prime numbers? When you are trying to find the prime factors of a number, why does it not matter which multiplication combination you start with?

Partner Work Work with your partner to find multiplication combinations with two, three, or more factors for one of these numbers: 1,200 1,800 2,100 Challenge: CAN YOU FIND THE PRIME FACTORIZATION FOR YOUR NUMBER?

Learning Goals What am I learning today? Why am I learning this?
How to find all the prime factors of a number Identify multiplication combinations and finding factors Why am I learning this? To help me understand numbers and factors of numbers How do I know when I am being successful? I can break apart factors until I get to all prime numbers I know how to find the prime factors of a given number

Guiding Question How do you know when you have found all the prime factors of a given number?

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