1. Lesson 5-6 Pages 226-230 Least Common Multiple Lesson Check 5-5

2. What you will learn! 1. How to find the LCM of two or more numbers. 2. How to find the LCD of two or more fractions.

3. Multiple Common Multiple Least common multiple Least common denominator

4. What you really need to know! The least common multiple (LCM) is the least nonzero number that is a multiple of the given numbers.

5. What you really need to know! The least common denominator (LCD) of two or more fractions is the LCM of the denominators.

7. LCM = 2  2  2  3  3 = 72 8 = 2  2  2 18 = 2  3  3 Example: Find the LCM of 8 and 18. 881624324048566472 181836547290108126144162 881624324048566472 1836547290108126144162

8. Example 1: Find the LCM of 24 and 18. 2 3 3 2 = 72

9. Example 2: Find the LCM of 168 and 180. 2 3 3 2 5 7 = 2,520

10. Example 3: Find the LCM of 12x 2 y 2 and 6y 3 223xxyyy=12x 2 y 3

11. Example 4: Find the LCD of 7/8 and 13/20 : 2225=40

12. Example 5: Find the LCD of 9/36a 2 b and 16/27ab 2 : 22333aabb = 108a 2 b 2

13. Example 6: Replace the ? with, or =.

14. Page 228 Guided Practice #’s 3-15

16. Pages 226-228 with someone at home and study examples! Read:

17. Homework: Pages 229-230 #’s 16-54 even #’s 61-80 Lesson Check 5-6

22. Page 735 Lesson 5-6

23. Lesson Check 5-6