# Calculating intervals across zero

In this lesson, we will investigate and model problems involving negative numbers.

# 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.

#### Unit quizzes are being retired in August 2023

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Quiz:

# Calculating intervals across zero

Quiz involving calculating intervals across zero.

Q1.Which of the below gives an answer of -1?

1/5

Q2.Which of the calculations below has the smallest answer?

2/5

Q3.A school football team scored a total of 3 goals in their recent games but let in 5. What is their goal difference?

3/5

Q4.I am in an elevator (lift) and I'm currently on level 6 but I need to get to -2. How many floors away is -2 from me?

4/5

Q5.The Olympic golf course in Rio has a par of 71 (expected number of strokes needed), if David scores 65, 70 and 66 on his 3 rounds, what is his total score?

5/5

#### Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

# Calculating intervals across zero

Quiz involving calculating intervals across zero.

Q1.Which of the below gives an answer of -1?

1/5

Q2.Which of the calculations below has the smallest answer?

2/5

Q3.A school football team scored a total of 3 goals in their recent games but let in 5. What is their goal difference?

3/5

Q4.I am in an elevator (lift) and I'm currently on level 6 but I need to get to -2. How many floors away is -2 from me?

4/5

Q5.The Olympic golf course in Rio has a par of 71 (expected number of strokes needed), if David scores 65, 70 and 66 on his 3 rounds, what is his total score?

5/5

# Lesson summary: Calculating intervals across zero

## Time to move!

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

For 5 mins...

Move around:
Walk

On the spot:
Chair yoga