Videos and solutions to help Grade 3 students learn how to solve word problems involving time intervals within 1 hour by counting backward and forward using the number line and clock.

Common Core Standards: 3.NBT.2, 3.MD.1

Related Topics:

Lesson Plans and Worksheets for Grade 3

Lesson Plans and Worksheets for all Grades

More Lessons for Grade 3

Common Core For Grade 3

New York State Common Core Math Module 2, Grade 3, Lesson 4

Application Problem

Patrick and Lilly start their chores at 5:00 p.m. The clock
and the number line show the times that Patrick and Lilly finish their chores.

Who finishes first? Explain how you know. Solve the problem without drawing a number line. You might want to visualize or use your clock template, draw a tape diagram, use words, number sentences, etc.

Concept Development

Look back at your work on Application Problem.

We know that Lilly finished after Patrick.

Let’s use a number line to figure out how many more minutes than Patrick Lilly took to finish.

Label the first tick mark 0 and the last tick mark 60. Label the hours and 5-minute intervals. T: Plot the times 5:31 p.m. and 5:43 p.m.

Find the difference between Patrick and Lilly’s times.

How many more minutes than Patrick did it take Lilly to finish her chores?

12 minutes more.

What strategy did you use to solve this problem?

1. Cole starts reading at 6:23 p.m. He stops at 6:49 p.m. How many minutes does Cole read?

Cole reads for __________ minutes.

2. Natalie finishes piano practice at 2:45 p.m. after practicing for 37 minutes. What time does Natalie’s practice start?

Natalie’s practice starts at __________ p.m.

6. Dion walks to school. The clocks below show when he leaves his house and when he arrives at school. How many minutes does it take Dion to walk to school?

Record your homework start time on the clock in Problem 6.

Directions: Use a number line to answer Problems 1 through 4.

1. Joy's mom begins walking at 4:12 p.m. She stops at 4:43 p.m. How many minutes does she walk? Joy's mom walks for __________ minutes.

2. Cassie finishes softball practice at 3:52 p.m. after practicing for 30 minutes. What time does Cassie's practice start?

Cassie’s practice starts at ____________.

3. Jordie builds a model from 9:14 a.m. to 9:47 a.m. How many minutes does Jordie spend building his model?

Jordie builds for _____________ minutes.

4. Cara finishes reading at 2:57 p.m. She reads for a total of 46 minutes. What time did Cara start reading? Cara starts reading at ____________ p.m.

5. Jenna and her mom take the bus to the mall. The clocks below show when they leave their house and when they arrive at the mall. How many minutes does it take them to get to the mall?

Time when they leave home:

Time when they arrive at the mall:

6. Record your homework start time:

Record the time you finish Problems 1–5:

How many minutes did you work on Problems 1–5?

Rotate to landscape screen format on a mobile phone or small tablet to use the **Mathway** widget, a free math problem solver that **answers your questions with step-by-step explanations**.

You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.