CCSS.Math.7.NS.1,3.EE.3( NQ2a) Adding and Subtracting Integers

Dear Girls and Boys,

So this is one of the MOST IMPORTANT concepts you will be learning and using from now on, you MUST really concentrate on these next few lessons. First with all things in math, all you can do as mathematicians is to add, subtract, multiply or divide - and in this case we are looking at integers (whole positive or negative numbers) .  We will start off with clumping adding and subtracting integers together.  

The vocabulary term for this lesson, is additive inverse.  This is the positive and negative number added together.  When you do, your answer is always 0.  For instance: -4 + 4 +0.  Makes sense doesn't it? 

Secondly, we will be looking at signs- positive and negative signs.  So one short cut rule is Same Signs and the second rule will be Different Signs!  So if both integers are positive- add both up and add the sign OR if both integers are negative- add both up and add the sign.  Got IT?  Major rule, so we will go over this.  

There will be a Graphic Organizer on this - does this show you the importance of operations with integers!  So, ask for your graphic organizer and I will know that you have indeed read this post! 

What a wonderful time we had on the field trip last Friday to Fort Williams and the Museum of Art.  Can you believe the great weather we had on NOVEMBER 3!!! Friends, Megan and Liv are certainly enjoying the day.

As always in MATH,

Mrs M