1. Thursday Schedule - Frenzy - Math Notebook - G.C.F. Notes

2. What numbers can be multiplied together to get 24? 1 x 24 2 x 12 3 x 8 4 x 6 The numbers 1, 2, 3, 4, 6, 8, 12, and 24 are called factors. These are the numbers being multiplied together. What are the factors of seven? 1 x 7 Good thing we just took notes on divisibility rules!

3. Greatest Common Factor (GCF) greatest largest shareThe greatest common factor is the largest factor that two numbers share. 1242Let’s find the GCF of 12 and 42! – First, we need to make a list of factors for each number…

4. 12 1 x 12 2 x 6 3 x 4 4 x 3 Factors of 12: 1, 2, 3, 4, 6,12 42 1 x 42 2 x 21 3 x 14 4 x ?? 5 x ?? 6 x 7 7 x 6 Factors of 42: 1, 2, 3, 6, 7, 14, 21, 42 Common Factors: 1, 2, 3, 6 Greatest6 Greatest Common Factor: 6 Use your divisibility rules to help find factors!

5. 1827 What is the GCF of 18 and 27?1827 1 x 18 2 x 9 3 x 6 4 x ? 5 x ? 6 x 3 Factors of 18: 1, 2, 3, 6, 9, 18 1 x 27 2 x ? 3 x 9 4 x ? 5 x ? 6 x ? 7 x ? 8 x ? 9 x 3 Factors of 27: 1, 3, 9, 27 Common Factors: 1, 3, 9 9 GCF: 9

6. whiteboards Time for white boards! Let’s practice finding the GCF of the following sets of numbers: 10 and 15 6 and 18 12 and 16 7 and 4 5 6 4 1

7. Homework Time!