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Negative Numbers. What do you understand by this?. We think of numbers being on a number line:. Understanding Negative Numbers. ∞. 0. 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. +. 0. 1.

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negative numbers

Negative Numbers

What do you understand by this?

understanding negative numbers

We think of numbers being on a number line:

Understanding Negative Numbers

0

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

+

understanding negative numbers3

0

1

2

3

4

5

6

7

8

9

10

The number line can also continue on past 0:

Understanding Negative Numbers

-9

-8

-7

-6

-5

-4

-3

-2

-1

These new numbers are negative numbers.

-

negative numbers4

6

5

4

Getting warmer

3

The temperaturescale is often seen vertically.

Negative Numbers

2

1

Water freezing

0

- 1

- 2

As the temperature goes below freezing we use negative numbers.

Getting colder

- 3

- 4

- 5

- 6

negative numbers6

Negative Numbers

-12

-10

-8

-6

-4

-2

0

2

4

6

8

10

12

The scale changed, each division is worth?

negative numbers7

Negative Numbers

-30

-25

-20

-15

-10

-5

0

5

10

15

20

25

30

The scale changed, each division is worth?

negative numbers8

-11

-10

-9

-8

-7

-6

-4

-3

-2

-1

0

1

Negative Numbers

-5

What’s the missing number?

negative numbers9

-28

-27

-26

-25

-24

-23

-21

-20

-19

-18

-17

-16

Negative Numbers

-22

What’s the missing number?

negative numbers10

-28

-26

-24

-22

-20

-18

-14

-12

-10

-8

-6

-4

Negative Numbers

-16

What’s the missing number?

slide11

40

35

30

25

20

15

10

5

0

-5

-10

-15

-20

negative numbers12

-30

-25

-20

-15

-10

-5

0

5

10

15

20

25

30

Which is colder -5 or -20?

Why?

Negative Numbers