7th grade

August 28-September 1
This week we will begin learning about subtracting integers. We will learn to add the opposite, or change it to an addition problem so that we can apply the rules we learned last week about adding integers.

August 20-25
We have begun by reviewing integers and absolute value. Integers are whole numbers and their opposites,  ..., -3, -2, -1, 0, 1, 2, 3, ...  Absolute value is the distance from zero. This distance is always a positive number. 

Next we learned about adding integers. By working several problems using chips for positives and negatives, we determined the rules for adding integers. 
Same signs (both positive or both negative): 
1. Add the numbers.
2. Keep the sign for the answer.
Here is a Khan Academy video modeling this with a number line.

Different signs (one positive and one negative):
1. Find the difference of the two numbers by subtracting the smaller number from the larger number.
2. Take the sign from the larger number as the sign for the answer.
Here is a Khan Academy video modeling this with a number line.

We ended the week by learning that these rules apply when adding decimals or fractions as well. We reviewed that for adding decimals we must line up the decimals and when adding fractions we must get a common denominator.
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