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Finding the Least Common Multiple

Last updated about 3 hours ago

6 questions

Note from the author:

Read and solve each problem.  Show your work.

Instructions

Read and solve each problem.  Show your work.

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Question 1

1.

What is the least common multiple of 4 and 6?

Question 2

2.

What is the least common multiple of 9 and 12?

Question 3

3.

Mark is buying black pens and blue pens. He wants to buy the same number of each. Black pens come in packs of 3, and blue pens come in packs of 4. What is the least number of each color Mark can buy?

Question 4

4.

Claire and Jordan are managers at different restaurants and regularly make deposits at the bank. Claire goes to the bank every 5 business days, while Jordan goes every 7 business days. They are both at the bank today. How many business days will it be until Claire and Jordan are at the bank on the same day again?

Question 5

5.

Amanda has two clocks. One is set to chime every 15 minutes. The other is set to chime every 9 minutes. They are both chiming at the same time right now. How long will it be until they chime at the same time again?

Question 6

6.

The manager at the local diner wants to order cups and lids. Cups come in packages of 25 and lids come in packages of 40. The manager wants to order the same number of each. What is the least number of each item the manager can order?