1. What do you understand by this?
Negative Numbers
What do you understand by this?

2. Understanding Negative Numbers
We think of numbers being on a number line: 1 2 3 4 5 6 7 8 9 10 ∞
These numbers are all positive numbers, although we don’t actually put the + sign in front of each number +

3. Understanding Negative Numbers
The number line can also continue on past 0: -9 -8 -7 -6 -5 -4 -3 -2 -1 2 3 4 5 6 7 8 9 10 1
These new numbers are negative numbers. -

4. The temperature scale is often seen vertically.6
Negative Numbers 5 4
Getting warmer 3
The temperature scale is often seen vertically. 2 1
Water freezing
- 1
- 2
As the temperature goes below freezing we use negative numbers.
Getting colder
- 3
- 4
- 5
- 6

5. Negative Numbers - This time the scale is horizontal-6 -5 -4 -3 -2 -1 1 2 3 4 5 6
What’s the difference between:
-2 and 6
-5 and -1
-3 and 6
-4 and 5
-6 and 6
Use the number line to make the jumps between the values.

6. The scale changed, each division is worth?
Negative Numbers
-12
-10 -8 -6 -4 -2 2 4 6 8 10 12
The scale changed, each division is worth?

7. The scale changed, each division is worth?
Negative Numbers
-30
-25
-20
-15
-10 -5 5 10 15 20 25 30
The scale changed, each division is worth?

8. What’s the missing number?
Negative Numbers -4 -3 -2 -1 1 -6 -7 -8 -9
-10
-11 -5
What’s the missing number?

9. What’s the missing number?
Negative Numbers
-21
-20
-19
-18
-17
-16
-23
-24
-25
-26
-27
-28
-22
What’s the missing number?

10. What’s the missing number?
Negative Numbers
-14
-12
-10 -8 -6 -4
-18
-20
-22
-24
-26
-28
-16
What’s the missing number?

11. 5 10 15 25 20 30 35 40
-20
-15
-10 -5
Where is: 22 -7 34
-16
on the number line?
What’s the difference between:
32 and -4
-10 and 25
-17 and 12
-1 and 32

12. Negative Numbers Which is colder -5 or -20? Why? 5 10 15 20 25 30 -55 10 15 20 25 30 -5
-10
-15
-20
-25
-30

13. Can you order this set of numbers starting with the coldest?20 5
- 2
- 15 10
- 20