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Monday, December 3, 2012

Madelaine's Subtracting Integer Scribepost

Integer Subtraction; Worksheet C
3 questions from the first column 


(+1)-(-2)=

positive 1 remove negative 2

Standard Form
+1--2
+1-(-2)

"To subtract something that isn't there you have to use a zero pair"

Since you are removing negative 2 from positive 1 you have to use a zero pair for 2 because you can't take away what's not there. Once you remove the negative 2 your answer is what you have left, which is positive 3.







(+1)-(-6)=

positive 1 remove negative 6

Standard From
+1--6
+1-(-6)

"To subtract something that isn't there you have to use a zero pair"

Since you are removing negative 6 from positive 1 you have to use a zero pair for 6 because you can't take away what's not there. Once you remove the negative 6 your answer is what you have left, which is positive 7.






(-3)-(+4)=

negative 3 remove positive 4

Standard From
-3-+4
-3-4

"To subtract something that isn't there you have to use a zero pair"

Since you are removing positive 4 from negative 3 you have to use a zero pair for 4 because you can't take away what's not there. Once you remove the positive 4 your answer is what you have left, which is negative 7.

4 comments:

  1. Great Job! I like the way you explained how you got the answer using words. You explained subtracting integers really well. The pictures helped a lot!

    ReplyDelete
  2. Good Job Madie! Your explanations are really easy to understand, which is good! And I like how your pictures show how you get to the answer! To make your post even better, I suggest you include a link and embed a video indicating how to subtract integers. Overall, nice work!

    ReplyDelete
  3. Good job! I like how you organized your post. I also like how you used words and integer chips to explain how you got your answers.

    ReplyDelete
  4. Greadt job Madie! Your work was very neat and it was easy for me to understand and I also like how you explained how to get the answer.

    ReplyDelete

 

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