Least Common Multiple Intro Lesson

Least Common Multiple

Find the least common multiple of 4 and 6.

Math Response

Find the least common multiple of 2 and 4.

Type answer here

Correct Answer: 4

Deg^°

Rad

Math Response

Find the least common multiple of 5 and 3.

Type answer here

Correct Answer: 15

Deg^°

Rad

Multiple Choice

What is the least common multiple of 9 and 3?

• 6
• 27
• 9
• 12

​Scheduling:

• Coordinating Events: When planning events like meetings or parties, you can use the LCM to find the earliest time when two or more schedules align.

• Scheduling Tasks: If you have recurring tasks with different frequencies (e.g., watering plants every 2 days and cleaning the house every 3 days), finding the LCM helps you determine when both tasks will coincide.

Cooking and Baking:

• Scaling Recipes: When adjusting recipe quantities, the LCM can help you find the smallest amount of ingredients needed to make equal portions of different items.

• Timing Cooking Processes: If you're timing multiple dishes that cook for different durations, the LCM can help you coordinate their completion times.

WHY find the LCM?

Two runners are running around a track. One runner takes 4 minutes to complete a lap, and the other takes 6 minutes. After how many minutes will they be at the starting line together again?

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Math Response

A bakery makes blueberry muffins every 3 days and chocolate chip muffins every 4 days. On what day will they make both types of muffins on the same day?

Type answer here

Correct Answer: 12

Deg^°

Rad

Match

Match the following word problems with the correct answer.

• A library lends books for 7 days and magazines for 5 days. If you borrow a book and a magazine today, in how many days will both be due on the same day?

• A coffee shop restocks its decaf coffee beans every 12 days and its regular coffee beans every 6 days. If both types of beans are restocked today, in how many days will they both be restocked again on the same day?

• A bakery makes loaves of white bread every 8 days and loaves of wheat bread every 4 days. If they make both kinds of bread today, in how many days will they make both kinds again on the same day?

35

12

8

• 35

• 12

• 8