Polygons
What is the name of a shape that has 4 sides?
Quadrilaterals!
342+299=____
641
There were 182 second graders and 141 third graders at Field Day. How many students were there in all?
323
199-182=____
17
What are two things that attributes of a polygon?
no curved sides
closed
3 or more sides
299+699=
No place value chart strategy
998
Jeremiah’s class collected 61 cans for the food drive. Jennifer’s class collected 73 cans. 14 cans fell off the table and had to be thrown away. How many cans did they have left?
120 cans
____ + 433=789
How many sides does a pentagon have?
5 sides! 
_____-105=622
727
Greg had $425. He spent $252 on a new bed. How much did he have left?
$173
600-84=____
516