Addition and Subtraction
1 + 9 =
10

Circle

Acute angle
Who is on the front of the dollar bill?

George Washington
10 x 2 =
20
10 - 2 =
8
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Triangles
How many degrees does a right angle have? 
90 degrees
Point to the quarter
6 / 3 =
2
23 + 7 =
30

Hexagon

Obtuse
Find the dime and tell me how much it is worth (how many cents?)
10 cents
5 x 3 =
15
2 + 4 + 5 =
11

Pyramid

Straight angle
How many quarters do you need for a dollar?
(hint: a quarter is worth 25 cents)
4
20 / 5 =
4
10 - 6 - 2 =
2

Cube
Name at least two angles 
Straight, obtuse, acute, and right

$2.21
10 x 10 =
100