Expanded Form
Partial Sums
Shapes
100
50 + 4 = ___
54
100
82 + 7 = ____
89
100
What is this shape?
Triangle
200
200 + 10 + 3 = ___
213
200
67 + 16 = ___
83
200
What is the same about all of these shapes?
They have 4 sides.
300
900 + 80 = ___
980
300
138 + 25 = ___
163
300
What is the name for these shapes?
Quadrilaterals
400
9 + 400 = ___
409
400
256 + 172 = ___
428
400
Are these polygons? Why or why not?
No. They are not closed shapes with straight lines.
500
7 + 400 + 50 = ___
457
500
572 + 249 = ___
821
500
What do all polygons need to have?
1. Closed shape
2. Straight lines
3. Lines do not cross