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Monday, January 6, 2014

Integers Scribe #1

Integers can be shown using integer chips or on a number line.

The positive number (+) is what you have.
The negative number (-) is what you owe.

I'm going to show you how to get the answer to : (+6)+(-4) =

First you have (+6). Since (+6) is a positive number, you have 6. Next is (-4). Since (-4) is a negative number, you owe 4.

(+6) = have 6
(-4) = owe 4

Secondly, you take the integers and put them into pairs like this:
+ + + + + + 
-  -  -  -
Integers that are paired with the opposite integer are called "zero pairs". In this case, they are all not in zero pairs. So we are leftover with positive 2 (+2).

Last step is the number line.
     ------> +6
<---------------0---------------->
     <------ -4

For (+6) of the question, I placed +6 on the left side of the number line on the top half going to the right.
Then I placed (-4) on the bottom half of the number line going to the left.

Now if you did this right, your answer for (+6) + (-4) should be +2.

Here is a video on how to add and subtract integers for more further understanding.

Part 1/2

Part 2/2

1 comment:

  1. Good job, i really liked how you explained what you're suppose to do. Keep up the good work! Also don't forget the link to an integer game at the bottom.

    ReplyDelete

 

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