LCM and GCF Lesson

Word Problems Involving GCF and LCM

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Fill in the Blanks

Multiple Select

Peter will have 18 personal pizzas and 27 cupcakes for his birthday. What is the maximum number of people he can invite so the food is shared equally?

• 54

• 9

• 18

• 27

Multiple Select

• Both will change to green simultaneously in 10 minutes.

• Both will change to green simultaneously in 15 minutes.

• Both will change to green simultaneously in 20 minutes.

Multiple Choice

The alarms from 3 people ring at the intervals of 5, 7, and 9 seconds respectively. In how many seconds they will be ringing altogether?

• They will ring together every 35 seconds.

• They will ring together every 350 seconds.

• They will ring together every 315 seconds.

• They will ring together every 305 seconds.