Operation Properties : Addition and Subtraction

Lesson overview

• warmup with simple addition/ subtraction
• definitions: what do you remember?
• open ended: what is the role of "0" in an equation?

Warmup problems:

• 4+7=
• 15-5=
• 3+2+3=
• 6+2+5=
• 9-3-2=

how many did you get correct?

The vocabulary we will use today:

• associative property
• commutative property
• subtracting
• adding

lets Watch this short video!

Now, lets do some math!
Please put your ipads away :)