Shape
Addition +
Subtraction -
100

I have 4 equal sides that are all the same length

Square

100

5+5

10

100

10 - 5 = 

5

200

I have 4 sides, two are long, and 2 are short. All my angles are right angles

Rectangle 


200

26 + 14

40

200

12 - 6 = 

6

300

I am a 3D shape. I have 1 side and 0 vertices. I look like a ball 

Sphere

300

156 + 345 

501

300

35 - 10 = 

25

400

I am a 3D shape. I have 6 faces, 12 vertices and 12 edges. I am also the shape of a dice....

Cube 

400

1234+567 = 

1801

400

450 - 20 = 

430

500

I am a 2D shape. I have 8 equal sides, 8 vertices. I also look like a sea creature with 8 tentacles  

Octopus 

500

5678+2468 = 

8146

500

1000 - 10 = 

990

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