Presentation is loading. Please wait.

Presentation is loading. Please wait.

Holt CA Course 1 3-3 Least Common Multiple Warm Up Warm Up California Standards California Standards Lesson Presentation Lesson PresentationPreview.

Similar presentations


Presentation on theme: "Holt CA Course 1 3-3 Least Common Multiple Warm Up Warm Up California Standards California Standards Lesson Presentation Lesson PresentationPreview."— Presentation transcript:

1 Holt CA Course Least Common Multiple Warm Up Warm Up California Standards California Standards Lesson Presentation Lesson PresentationPreview

2 Holt CA Course Least Common Multiple Warm Up Write the prime factorization of each number Find the greatest common divisor and and    5 

3 Holt CA Course Least Common Multiple Number Sense (NS2.4) - Determine the least common multiple of whole numbers; Number Sense (NS2.4) - Determine the least common multiple and the greatest common divisor of whole numbers; use them to solve problems with fractions (e.g. to find a common denominator to add two fractions or to find the reduced form of a fraction). California Standards

4 Holt CA Course Least Common Multiple Objective: You will learn how to find the least common multiple of two or more whole numbers.

5 Holt CA Course Least Common Multiple Vocabulary multiple Least Common Multiple (LCM)

6 Holt CA Course Least Common Multiple The tires on Kendra’s truck should be rotated every 7,500 miles and the oil filter should be replaced every 5,000 miles. What is the lowest mileage at which both services are due at the same time? To find the answer, you can use least common multiples.

7 Holt CA Course Least Common Multiple A multiple of a number is a product of that number and a nonzero whole number. Some multiples of 7,500 and 5,000 are as follows: 7,500: 7,500, 15,000, 22,500, 30,000, 37,500, 45,000,... 5,000: 5,000, 10,000, 15,000, 20,000, 25,000, 30,000,... A common multiple of two or more numbers is a number that is a multiple of each of the given numbers. So 15,000 and 30,000 are common multiples of 7,500 and 5,000.

8 Holt CA Course Least Common Multiple The least common multiple (LCM) of two or more numbers is the common multiple with the least value. The LCM of 7,500 and 5,000 is 15,000. This is the lowest mileage at which both services are due at the same time. To find the LCM of two or more numbers, use the “Stairs Method!”

9 Holt CA Course Least Common Multiple Find the least common multiple (LCM). Example 1: Using the “Stairs Method” to Find the LCM (A) 2, 7(B) 3, 6, 9

10 Holt CA Course Least Common Multiple Check It Out! Example 2 Find the least common multiple (LCM). (A) 3, 7 (B) 2, 6, 4

11 Holt CA Course Least Common Multiple Find the least common multiple (LCM) of 60 and 130. Example 3: Using the “Stairs Method” to find the LCM The LCM is 780.

12 Holt CA Course Least Common Multiple Example 4: Using the “Stairs Method” to find the LCM Find the least common multiple (LCM). 14, 35, 49 The LCM is 490.

13 Holt CA Course Least Common Multiple Check It Out! Example 5 Find the least common multiple (LCM). 50, 110 The LCM is 550.

14 Holt CA Course Least Common Multiple Check It Out! Example 6 18, 36, 54 The LCM is 108. Find the least common multiple (LCM).

15 Holt CA Course Least Common Multiple Mr. Washington will set up the band chairs all in rows of 6 or all in rows of 8. What is the least number of chairs he will set up? Example 7: Application Find the LCM of 6 and 8. He will set up at least 24 chairs.

16 Holt CA Course Least Common Multiple Check It Out! Example 8 Two satellites are put into orbit over the same location at the same time. One orbits the earth every 24 hours, while the second completes an orbit every 18 hours. How much time will elapse before they are once again over the same location at the same time? Find the LCM of 24 and hours will elapse before they are over the same location at the same time.

17 Holt CA Course Least Common Multiple Home Learning On-Line Tutoring Snowball Fight!

18 Holt CA Course Least Common Multiple Lesson Quiz Find the least common multiple (LCM) , , 6, You are planning a picnic. You can purchase paper plates in packages of 30, paper napkins in packages of 50, and paper cups in packages of 20. What is the least number of each type of package that you can buy and have an equal number of each? , , 8, packages of plates 6 packages of napkins 15 packages of cups


Download ppt "Holt CA Course 1 3-3 Least Common Multiple Warm Up Warm Up California Standards California Standards Lesson Presentation Lesson PresentationPreview."

Similar presentations


Ads by Google