Unit 5, Lesson 12
Hours, Minutes, and Seconds
Grade 4
Activity 1
The table shows how Mai spends the time she is awake on a school day.
| activity | hours | minutes |
|---|---|---|
| morning routine | 1 | |
| getting to school | ||
| time at school | 8 | |
| getting home from school | ||
| homework and reading | ||
| playing and family time | 2 | |
| bedtime routine |
-
Complete the table to show how many minutes Mai spends on each activity.
-
How many hours does Mai spend at school? What is the time in minutes?
- How many minutes does Mai sleep on a school night? Explain or show your reasoning.
Activity 2
Diego sets a timer to make sure his daily activities do not take too long or too short an amount of time.
| activity | minutes | seconds |
|---|---|---|
| brushing teeth | 2 | |
| showering | 3 | |
| heating a cup of milk in the microwave | ||
| break during homework time | 5 | |
| quick workout | 10 | |
| daily reading | 30 |
-
Complete the table, with the number of seconds for each activity.
-
Diego notices on a television channel that commercial breaks often are between minutes and minutes long. How long are they in seconds? Explain or show your reasoning.
-
Diego’s workout starts with 4 minutes of warming-up and stretching, followed by 100 seconds of jumping jacks.
If he works out for 10 minutes exactly, how many more seconds are left in his workout?