Addition and Subtraction
3+7-1
9
11x11
121
This shape has 3 sides and 3 60°.
Triangle
1ft = ?in.
12
22
4
-3+1
-2
-21÷-7
3
This shape has 4 90°.
Square or Rectangle
3ft = ?yd
1
73
343
5x-(-x)
6x
4x÷-2x
-2x
Interior angle is equal to 108°. What shape is it.
Pentagon
?cm = 1m
100
x2+2x2
3x2
(2x-9x)+(-y-11y)
-7x-12y
-2(x-y)
-2x+2y
Exterior angle is 60°. What is the shape?
Hexagon
?cm = 1km
100,000
3y3+y3-2x2+4x2
4y3+2x2 or 2x2+4y3
(5x+7y)-(3x+2y)
2x+5y
(x-y)(x+y)
x2-y2
Exterior angle is approximately 51.43°, what is the approximate interior angle of the Heptagon.
128.57
?mm = 1km
1,000,000
7x2(7x5)
49x7