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20 Cards in this Set
 Front
 Back
Distributive Property

You can multiply a number by the sum of two other numbers or multiply the number by each and then add:
5(2 + 3) = 5(2) + 5(3) 

Inverse Property of Addition

You can add the opposite of a number and get zero (to cancel):
4 + 4 = 0 

Inverse Property of Multiplication

You can multiply by the reciprocal of a number and get one (to cancel):
3/4 x 4/3 = 1 

Commutative Property

You can change the order in which you add or multiply two numbers and get the same answer:
3 + 5 = 5 + 3 7 x 8 = 8 x 7 

Associative Property

You can group numbers differently when adding or multiplying and get the same answer:
6 + (7 + 9) = (6 + 7) + 9 3 x (4 x 5) = (3 x 4) x 5 

Identity Property of Addition

You can add zero to a number and keep it the same:
6 + 0 = 6 

Identity Property of Multiplication

You can multiply a number by one and keep it the same:
4 x 1 = 4 

Area of a Triangle

A = 1/2 bh


Area of a Parallelogram
(including rectangles, squares, rhombi) 
A = bh


Area of a Trapezoid

A = 1/2 h (b1 + b2)


Volume of a rectangular solid (box)

V = lwh


Surface Area of a rectangular solid (box)

SA = 2lw + 2wh + 2lh


Area of a Circle

A = pi x r x r


Circumference of a Circle

C = pi x d


Volume of a cylinder (can)

V = pi x r x r x h


Surface Area of a cylinder (can)

SA = 2pi x r x h + 2pi x r x r


Sin A

opposite/hypotenuse


Cos A

adjacent/hypotenuse


Tan A

opposite/adjacent


Pythagorean Theorem

axa + bxb = cxc
