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# Rational Numbers on a Number Line

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## S S

on 3 September 2013

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#### Transcript of Rational Numbers on a Number Line

Rational Numbers on a Number Line
0
-2
2
-1
1
100%
1/2
1 1/4
- 5/10
- 1 2/5
1 3/4
50%
-140%
200%
-50%
1.25
- 0.5
0.5
-1.40
1.75
Real World Example
Real World Example
Real World Example
Real World Example
Real World Example
Real World Example
Real World Example
Real World Example
Real World Example
Real World Example
-2
The rational number -2 could be used to represent the
amount of debt you need to pay to somebody. For example you may have to owe someone 2 dollars, making your debt to them -2.
-1
-50%
This number could
be used to represent a sale in which something is 50% off on discount. For example a t-shirt may cost 70 RM and you get a 50% discount making it 35 RM
0
In the real world, 0 could represent sea level. Meaning the height above sea level is in positive numbers, while the depth of the ocean is in negative numbers.
1/2
An example of this fraction could be 1/2 a pizza. As seen in the image you see 1 half of a pizza.
-1.40
100% (1)
The integer , 1 could represent one whole cake. If you have one cake, this means you have 100% of a cake.
1.25
This decimal could represent the price of an object. For example a pencil may cost \$1.25 (one dollar and 25 cents).
1 3/4
This fraction could represent the amount of flour you need to put in a cake. To make sure you get the amount right, you would use a measuring cup. You would pour in 1 whole cup, and then 3/4 of the cup.
2

200%
2 could represent the number of objects you have. For example you could have
2
oranges. If one orange was 100%,
2
oranges would be 200%.
This negative number could be used to detail the temperature. In some really cold places the temperature can go below zero making it a negative number. The decimal 1.40 could be used to describe a temperature in a very cold place.
If you get a question wrong in a test it could result in a minus point. For example if there are 10 questions and you get one wrong, that would -1 point, making you get 9/10 questions right.

"GFC Gym Sale." . N.p.. Web. 2 Sep 2013. <http://www.canadianfighting.com/2012/12/31/cfc-gym-sale-50-off-all-new-memberships-in-january/>.

"The Interpretation of Dreams ." . N.p.. Web. 2 Sep 2013. <http://eofdreams.com/cake.html>.

"iStockphoto ." . N.p.. Web. 2 Sep 2013. <http://www.istockphoto.com/stock-photo-1640168-half-pizza.php>.

"Plastic Jungle Blog." . N.p.. Web. 2 Sep 2013. <http://www.plasticjungle.com/blog/2012/11/14/how-are-discount-gift-cards-born/2-dollarsa-2/>.

"Christmas Tree Care Tips ." . N.p.. Web. 2 Sep 2013. <http://alteredgroundslandscaping.com/2012/11/christmas-tree-care-tips/>.

Photo Credit: <a href="http://www.flickr.com/photos/39513725@N02/9639596816/">Juanedc</a> via <a href="http://compfight.com">Compfight</a> <a href="http://creativecommons.org/licenses/by/2.0/">cc</a>

Photo Credit: <a href="http://www.flickr.com/photos/33124677@N00/7848698672/">Curtis Gregory Perry</a> via <a href="http://compfight.com">Compfight</a> <a href="http://creativecommons.org/licenses/by-nc-sa/2.0/">cc</a>

"Orange picture ." . N.p.. Web. 2 Sep 2013. <http://www.trainingreference.co.uk/free_pictures/gallery_3/orange_2.htm>.

"Measuring Cup ." . N.p.. Web. 2 Sep 2013. <http://en.wikipedia.org/wiki/Measuring_cup>.

Photo Credit: <a href="http://www.flickr.com/photos/27983776@N03/4389632410/">SergioTudela</a> via <a href="http://compfight.com">Compfight</a> <a href="http://creativecommons.org/licenses/by/2.0/">cc</a>

Photo Credit: <a href="http://www.flickr.com/photos/47757737@N00/2983779842/">OliBac</a> via <a href="http://compfight.com">Compfight</a> <a href="http://creativecommons.org/licenses/by/2.0/">cc</a>

Photo Credit: <a href="http://www.flickr.com/photos/47757737@N00/2983779842/">OliBac</a> via <a href="http://compfight.com">Compfight</a> <a href="http://creativecommons.org/licenses/by/2.0/">cc</a>

"Good To Know." . N.p.. Web. 3 Sep 2013. <http://www.goodtoknow.co.uk/wellbeing/276084/Wrong-answer-to-question-1>.
Sources
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Sources
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