Aim: How can a chip model or number line be useful in determining an algorithm for subtraction?Homework: Txtbk p.45 #18-29Do Now: 1. What is the algorithm we determined last class for the addition of integers? 2. Without finding the sum determine whether the following will be positive, negative, or zero. 12 + (-16) + 20 + (-17) Classwork: We explored subtraction problems with integers and understood this central point: subtracting a negative is the same as adding a positive AND subtracting a positive is the same thing as adding a negative.Announcements: I will be offering extra help on Tuesdays after school in room 228. The first session meets tomorrow.Resources:## Leave a Reply. |
## AuthorMr. Severiano ## Archives
June 2018
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