Elapsed Time Word Problems

This video tutorial teaches how to solve elapsed time word problems using a number line. It begins with an introduction to the concept and reviews solving problems in one-hour intervals. Common mistakes, such as incorrect addition of times, are discussed. The tutorial provides a detailed example using Tanya's daycare scenario, demonstrating how to calculate elapsed time with a number line. The lesson concludes with a summary of the techniques learned.

What is the main focus of this lesson?

• Understanding time zones

• Learning to read a clock

• Solving elapsed time word problems

• Calculating speed and distance

What is a common mistake when solving elapsed time problems?

• Ignoring the AM/PM distinction

• Subtracting instead of adding

• Using a number line

• Simply adding times using standard algorithms

In Tanya's daycare problem, what is the start time?

• 2:45 PM

• 9:15 AM

• 8:30 AM

• 12:45 PM

How many one-hour hops are needed to reach 2:15 PM from 9:15 AM?

• 6 hops

• 5 hops

• 4 hops

• 3 hops

How many minutes are added after reaching 2:15 PM to get to 2:45 PM?

• 15 minutes

• 20 minutes

• 25 minutes

• 30 minutes

What is the total time Tanya spent at daycare?

• 4 hours and 45 minutes

• 5 hours and 15 minutes

• 6 hours

• 5 hours and 30 minutes

What is the start time in the problem involving a clock showing 12:45?

• 3:45 PM

• 1:45 PM

• 2:45 PM

• 12:45 PM

After adding 2 hours to 12:45, what time do you reach?

• 2:45 PM

• 1:45 PM

• 4:45 PM

• 3:45 PM

How many five-minute intervals are added after reaching 2:45 PM?

• 4 intervals

• 2 intervals

• 1 interval

• 3 intervals

What is the final time after adding 2 hours and 10 minutes to 12:45?

• 2:55 PM

• 3:00 PM

• 3:05 PM

• 3:10 PM