1. Lesson #7 GCD and Factors

2. MULTIPLES (first 4)FACTORS 24 10 35 Multiples you must multiply ( x ). Divisors or Factors you must divide (÷).

3. Greatest Common Divisor (GCD) Step 1: Write the divisors of the numbers in the question Step 2: Highlight the common divisors amongst the numbers Step 3: Find the GREATEST Common Divisor.

4. Examples: Find the GCD of: 1. 12 and 24 12: 24: GCD for 12 and 24 =

5. Find GCD for 27, 36, and 54 27: 36: 54: GCD for 27, 36, and 54 =

6. When do we need GCD? Making teams or dividing more than one thing equally Simplify fractions

7. Example ◦Mr. Beaudoin wants to make equal teams with all the same number of boys and girls. There are 32 boys and 24 girls. What is the maximum number of teams and how many boys and girls will there be in each?