How to Subtract Integers Part 3

In this video, we summarize what we have learned in the first part and second part of this tutorial series on subtraction of integers. The main point of the discussion in the video is that any subtraction expression can be converted into an addition expression.

Watch the video above and then answer the Practice Exercises below.

Practice Exercises: Convert the following subtraction expressions to an addition expression and then find the answer.

1.) – 12 – 11

2.) 8 – 12

3.) 5 – (- 7)

4.)- 13 – (- 4)

5.) 0 – 21

Answers to Exercises

 

1.) – 12 – 11 = – 12 +  (-11) = -23

2.) 8 – 12 = 8 + (-12) = -4

3.) 5 – (- 7) = 5 + 7 = 12

4.)- 13 – (- 4) = – 13 + 4 = -9

5.) 0 – 21 = 0 + (-21) = -21

 

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