Lesson 1.3: Adding Integers

​Commutative Property: When adding or multiplying two numbers together we can change to order of the numbers.
Ex: 3 + 5 = 5 + 3
or: a + b = b + a
Ex: 2 X 4 = 4 X 2
or: a * b = b * a

​Today we are going to work with adding integers. We will be working with different signs and figuring what happens when adding together a positive and positive, a positive and negative and a negative and negative.

​Adding Integers:
Same sign ==> add the numbers and keep the sign.

Different sign ==> subtract the numbers and keep the sign of the larger number.

​Number Line:
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Counters:
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.Basic Skills:

​I learned that when adding integers, I need to notice if the integers have the same or different _____.

When the signs are the same I ____ the integers and keep the ____ stays the same.

When the signs are different, I ____ the integers and keep the ____ of the ____ integer.