PowerPointPresentation-GCFandLCMProblemSolving：PowerPoint演示文稿-GCF和LCM解决问题.ppt

LCM Example: Applying what we have learned… Ben exercises every 12 days and Isabel every 8 days. Ben and Isabel both exercised today. How many days will it be until they exercise together again? Ben exercises every 12 days and Isabel every 8 days. Ben and Isabel both exercised today. How many days will it be until they exercise together again?  K: Ben exercises every 12 days and Isabel every 8 days and they both exercised today. W: How many days is it until they will both exercise on the same day again. L: This problem can be solved using Least Common Multiple. We are trying to figure out when will be the next time they are exercising together. Find the LCM of 12 and 8. Ben exercises every 12 days and Isabel every 8 days. Ben and Isabel both exercised today. How many days will it be until they exercise together again?  LCM Word Problem Solution 2 l 12__8 2 l 6___4 3 2 LCM = 2 x 2 x 3 x 2 = 24 Ben and Isabel would exercise on the same day every 24 days. PRACTICE!!!!!! In your MSG page 39/41, tell whether the following word problems could be solved using GCF or LCM… Then solve the problem Question #1 Mrs. Evans has 120 crayons and 30 pieces of paper to give to her students. What is the largest # of students she can have in her class so that each student gets equal # of crayons and equal # of paper. GCF Question #2 Rosa is making a game board that is 16 inches by 24 inches. She wants to use square tiles. What is the largest tile she can use? GCF Question #3 Z100 gave away a Z $100 bill for every 100th caller. Every 30th caller received free concert tickets. How many callers must get through before one of them receives both a coupon and a concert ticket? LCM Question #4 Two bikers are riding a circular path. The first rider completes a round in 12 minutes. The second rider completes a round in 18 minutes. If they both started at the same place and time and go in the same direction, after how many minutes will they meet again at the startin