Subtracting Integers
Subtracting Integers using a Number line
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Subtracting Integers using Chips
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https://www.khanacademy.org/math/algebra-basics/basic-alg-foundations/alg-basics-negative-numbers/e/adding_negative_numbers
https://www.khanacademy.org/math/algebra-basics/basic-alg-foundations/alg-basics-negative-numbers/e/adding_and_subtracting_negative_numbers
https://www.ixl.com/math/grade-7/add-and-subtract-integers
http://www.thegreatmartinicompany.com/negativenumbers/negative-number-addition.html
https://www.khanacademy.org/math/algebra-basics/basic-alg-foundations/alg-basics-negative-numbers/e/adding_and_subtracting_negative_numbers
https://www.ixl.com/math/grade-7/add-and-subtract-integers
http://www.thegreatmartinicompany.com/negativenumbers/negative-number-addition.html