GCF and LCM

What is the greatest common factor (GCF) of two numbers? the odd numbered factor that two numbers have in common the smallest multiple that two numbers have in common the largest factor that two numbers have in common the smallest factor that two numbers have in common Find the GCF using the ladder method. Draw and find the GCF of 36 and 54 Find the GCF of 16 and 64 4 16 8 32 Find the GCF of 5 and 11. 1 11 5 2 What is the least common multiple? the number of multiples that two or more numbers have in common the greatest factor that two or more numbers have in common the smallest factor that two or more numbers have in common the smallest multiple that two or more numbers have in common Find the LCM using the ladder method. Draw and find the LCM of 8 and 20. Find the LCM using the ladder method. Draw and find the LCM of 20 and 30. Find the LCM using the ladder method. Draw and find the LCM of 12 and 36. Find the LCM of 4 and 5 10 12 20 40 Find the LCM of 3, 5, and 6 15 24 30 90 Find the LCM of 18 and 45. 45 60 55 90 Sam and RJ are in clubs that meet on different weeks. Sam's meeting are every 3 weeks and RJ's are every 4 weeks. When will their meetings be in the same week? 24 weeks 18 weeks 12 weeks 8 weeks You have diving lessons every 5th day and swimming lessons every 3rd day. Today you have both lessons. In how many days will you have both lessons on the same day again? 5 days 10 days 15 days 30 days