Scribe Post for October 27, 08 by Christian

7:11 PM

(3) Comments







Subtracting Integers








When subtracting integers we have to use the rule:TO SUBTRACT INTEGERS, "WE ADD THE OPPOSITE"









For example:









1)(+4)-(+3)=

(+4)+(-3)=+1

after you change the opposites you must follow the rule in adding integers.









There is another way to subtract integers and that is using the algebra tiles.

You need to draw the algebra tiles that represents the equation.

Then you need to find the the zero pair of the integer like showed in the diagram then

take away the integer that is really there and replace it with the opposite integer, for example -3 replace it with +3..... that is what I meant about replacing it with the opposite integer.

For example:

1)( - 2 )-( - 3 ) = +5










Here is a great video so you can understand more about subtracting integers......




Plssssssssssssss.leave a commeent

3 Responses to "Scribe Post for October 27, 08 by Christian"

kara 8-73 said :
October 28, 2008 at 3:57 PM
great scribe!! But next time try to add more pictures to show your work.
October 29, 2008 at 4:40 PM
This is a great post! You explain the pictures very well, and the video also helps to explain it! Good job!

Nicole from the University of Regina
justinp8-73 said :
October 29, 2008 at 5:39 PM
very good job and the video does help too!

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