Solving Elapsed Time Word Problems in Five Minute Intervals

This video tutorial teaches how to solve elapsed time word problems using a number line. It begins with an introduction to the concept, followed by a review of solving problems in one-hour intervals. Common mistakes are discussed, and two example problems are solved: one involving a daycare scenario and another with a clock. The tutorial concludes with a summary of the strategies learned.

What is a common mistake when solving elapsed time word problems?

• Using a number line

• Adding time directly using standard algorithms

• Subtracting the start time from the end time

• Using a calculator

How many hours did Tanya spend at daycare?

• 6 hours

• 5 hours and 30 minutes

• 5 hours and 15 minutes

• 4 hours and 30 minutes

What is the first step in solving Tanya's daycare problem using a number line?

• Label the end time

• Estimate the time difference

• Calculate the total minutes

• Draw a hash at the start time

What time will it be 2 hours and 10 minutes after 12:45?

• 2:45 PM

• 2:55 PM

• 3:00 PM

• 3:15 PM

How do you use a number line to solve elapsed time problems?

• By drawing a line and marking every 10 minutes

• By marking the start time and taking hops in intervals

• By calculating the total hours and minutes directly

• By using a clock face to visualize the time