# Estimating and rounding contexts

In this lesson, we will develop number sense as well as applying the skills of rounding and estimating linked to everyday situations.

# Video

Click on the play button to start the video. If your teacher asks you to pause the video and look at the worksheet you should:

• Click "Close Video"
• Click "Next" to view the activity

Your video will re-appear on the next page, and will stay paused in the right place.

# Worksheet

These slides will take you through some tasks for the lesson. If you need to re-play the video, click the ‘Resume Video’ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click ‘Next’ below.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

# Estimating and Rounding Contexts Quiz

Show me what you've learnt in this short quiz! Good Luck!

Q1.There are 2271 satellites currently in space. What is this number rounded to the nearest 10?

1/6

Q2.There are 2271 satellites currently in space. What is this number rounded to the nearest 100?

2/6

Q3.The moon Ganymede takes 172 hours to orbit Jupiter. What is this number rounded to the nearest 10?

3/6

Q4.The moon Ganymede takes 172 hours to orbit Jupiter. What is this number rounded to the nearest 100?

4/6

Q5.When rounded to the nearest 10, it takes Mars approximately 690 days to orbit the Sun. What is the greatest number of days it can take?

5/6

Q6.When rounded to the nearest 10, it takes Mars approximately 690 days to orbit the Sun. What is the least number of days/

6/6

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

# Estimating and Rounding Contexts Quiz

Show me what you've learnt in this short quiz! Good Luck!

Q1.There are 2271 satellites currently in space. What is this number rounded to the nearest 10?

1/6

Q2.There are 2271 satellites currently in space. What is this number rounded to the nearest 100?

2/6

Q3.The moon Ganymede takes 172 hours to orbit Jupiter. What is this number rounded to the nearest 10?

3/6

Q4.The moon Ganymede takes 172 hours to orbit Jupiter. What is this number rounded to the nearest 100?

4/6

Q5.When rounded to the nearest 10, it takes Mars approximately 690 days to orbit the Sun. What is the greatest number of days it can take?

5/6

Q6.When rounded to the nearest 10, it takes Mars approximately 690 days to orbit the Sun. What is the least number of days/

6/6

# Lesson summary: Estimating and rounding contexts

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## Time to move!

Did you know that exercise helps your concentration and ability to learn?

For 5 mins...

Move around:
Jog

On the spot:
Chair yoga