LCM and GCF Word Problems

What is the key indicator to use least common multiple (LCM) in order to solve a word problem?

When should you use greatest common factor (GCF) to solve a word problem?

In the example of chicken nuggets and french fries being served every 5 days and 3 days respectively, which method should be used to find when they will be served together again?

In the example of Peter planning his birthday party and sharing 18 pizzas and 27 cupcakes equally, which method should be used to find the number of people he can invite?

How many total people can Peter invite to his party if he has 18 pizzas and 27 cupcakes to share equally?

In the example of Mr. Staub sharing 84 packs of pretzels and 56 juice boxes equally with his students, which method should be used to find the number of students in his class?

How many students does Mr. Staub have in his class if he wants to share 84 packs of pretzels and 56 juice boxes equally?

In the example of Matthew going hiking every 8 days and swimming every 6 days, which method should be used to find when he will do both activities again?

How many days from now will Matthew do both hiking and swimming again if he did both activities today?

What is a key phrase to look for when deciding to use greatest common factor (GCF) to solve a word problem? Select ALL that apply!