### Real Numbers: Activity 1 - What does it mean to us?

1. If -4 km/h means 4 km/h below the speed limit, what does 12 km/h mean?
2. If -7˚C denotes a temperature drop of 7˚C, what does 5˚C denote?

3. If 20 km denotes a distance of 20 km due east, what denotes a distance of 6 km due west?
4. If 100 represents a gain of \$100, what number represents a loss of \$150?
5. If we use the integer "5" to represent 5 floors above the ground level, what integer is used to represent 2 floors below the ground level?

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Responses (after lesson)
1. 12 km/h means 12 km/h above the speed limit
2. 5˚C denotes an increase of 5˚C
3. - 6 km
4. -\$150
5. -2

1. 1. 12km/h means that it is 12 km above the speed limit.
2. 5˚c denotes a temperature rise of 5˚c.
3. -6km denotes the distance.
4. -150 represents the loss.
5. -2 is used.

2. This comment has been removed by the author.

3. 1. 12km/h means 12km/h over the speed limit.
2. 5°c means a temperature rise of 5°c.

3. -6km detonates a distance of 6km west.
4. The number is -\$150.
5.The integer is -2

4. 1. 12km/h above the speed limit
2.temperature increase of 5oC
3.-6km
4.-\$150
5.-2
Liew Wei Siew

5. 1.12km/h means 12km/h above the speed limit.
2.It denotes a temperature rise of 5˚C.
3.-6km denotes a distance of 6km due west.
4.-150 represents a loss of \$150?
5. The integer"-2" is used to represent 2 floors below the ground level?

6. 1. 12km/h above the speed limit
2. a temperature rise of 5°C
3.It will be -6km
4. -150
5. -2

7. BTWFYI, Nemo is Owen.

8. Mark :) :( :&#39;( (^^^) :D :O :42: O:) :p2/10/2011 02:36:00 PM

1.12km/h above the speed limit.
2.It denotes a temperature rise of 5˚C.
3.It would be -6km.
4.-150 will denote a loss of \$150.
5.-2 will be used to denote 2 floors below ground.

9. 1.12km/h means 12km above the speed limit.
2.It denotes a 5 ˚C rise in temperature.
3.It would denote -6km due east.
4.The number what would be -\$150 or a loss of \$150.
5.The integer would be -2.

10. 1) It means 12km/h over the speed limit.
2) It denotes a 5 ˚C rise in temperature .
3) -6km denotes 6km due west.
4) -150 denotes the lost of \$150.
5) The integer would be -2.

11. 1) It means 12km/h above the speed limit
2) It denotes a 5 ˚C rise in temperature
3) -6km denotes 6km due west
4) -\$150 denotes the lost of \$150
5) The integer would be -2.
Matthew

12. 1)It means 12km/h above the speed limit.
2)It indicates a 5°C rise in temperature.
3)It denotes -6km would denote km due west.
4)-\$150 represents a loss of \$150
5)The integer would be -2

13. 1. It means that it is 12km/h above the speed limit
2. It denotes a 5 ˚C rise in temperature.
3. -6 km denotes the distance of 6 km due west.
4. -150 represents the loss of \$150.
5. The integer -2 is to represent 2 floors below ground level.

14. 1. 12km/h above the speed limit.
2. An increase of temperature by 5°C.
3. -6km
4. -150
5. -2

15. 1)12km/h means it is 12km/h above the speed limit.
2)The temperature increased by 5 degrees celsius.
3)-6km
4)-150
5)-2

16. 1. 12 km/h means its 12km/h above the speed limit
2. 5˚C denotes a 5˚C increase of temperature
3. -6km denotes a distance of 6 km due west?
4. -150 represents a loss of \$150?
5. -2 is used to represent 2 floors below the ground level?

17. This comment has been removed by the author.

18. 1. It means 12km/h above the speed limit.
2. It denotes a temperature increase of 5˚C.
3.-6 km denotes a distance of 6 km due west.
4. -150 represents the loss.
5. The integer -2 is used.

-Nina

19. QUESTION ONE: 12km/h means 12km/h above the speed limit.
QUESTION TWO: 5˚C denotes a 5˚C rise in the temperature.

QUESTION THREE: -6km denotes a distance of 6 km due west.
QUESTION FOUR: -\$150 represents a loss of \$150.
QUESTION FIVE: the integer -2 is used to represent 2 floors below the ground level.

20. 1.)12km/h above the speed limit
2.)5˚C denote a temperature rise of 5˚C
3.)-6km denotes a distance of 6 km due west
4.)-\$150 represents a loss of \$150
5.)-2 is used to represent 2 floors below the ground level?
-Ruoyu

21. 1. 12 km/h means 12 km/h above the speed limit.
2. 5ºC denotes a rise of 5ºC in temperature.
3. -6 km denotes a distance of 6 km due west.
4. -\$150 represents a loss of \$150.
5. The integer "-2" represents 2 floors below ground level.

22. Dear all

Please compare what you have submitted to what's updated in the post.

In particular, Q3 to Q5 where "-" is used to describe the "opposite".