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# PRAXIS Math

### PRAXIS II

Scientific notation Writing or displaying numbers in decimal numbers btwn 1 & 10 mult. by a power of 10 IE 10492 is 1.0492 x 10 to the 4th
Cardinal number used in counting to indicate quantity but not order ie: 3, 11, 412
Ordinal number A number indicating position in a series or order. IE: 1st, 2nd, 3rd.
Prime number A positive interger not divisible without a remainder by any positive interger other than itself and one
Composite number An interger exactly divisible by at least one positive integer other than itself or one
Least Common Factor The least whole number which can be divided exactly by each of two or more given whole numbers
Greastest Common Factor The greatest whole number which will divided exactly into each of two or more given whole numbers
Factor Tree A diagram showing all stages of breaking down a number by division into its prime factors.
Commutative Two values in an addition can be exchanged with each other without changing the result of the calculation
Associative More than two successive additons can be done in any order without changing the result of the caluculatin
Distributive property In order to multipy two expressions, each term of one expression must be multiplied by each term of the other expression
Order of Operations Please Excuse My Dear Aunt Sally
A negative multiplied or divided by a negative equals?? A positive nubmer
A negative multiplied by a positive equals?? A negative number
Treat a negative sign just like a subtraction sign 3+-2=3-2 or 1
Remember you can reverse numbers while... adding or subtracting -4+2=2+-4+2 -4 =-2
A negative number subtracted from another number is the same as adding a ... positive number 2--=2+1=3
The product of any number and Zero is... zero
Zero divided by any number is... zero
Any number divided by zero is... zero
The Area of a triangle 1/2 the base x height
Area of a circle is pi and the radius squared
circumference of a circle is... pi and the diameter
Volume equals base x height
perimeter sum of the lengths forming the sides of a polygon
Parallel Everything is equal distance
Perpendicular Forming of a right angle
Angle The union of two rays with a common endpoint
The common endpoint of two rays Vertex
Angle measure The amount of rotation of a ray around its endpoint
Right angle 90 degree angle
Right triangle A triangle with one right angle
Isosceles triangle A triangle with at least two congruent sides and two congruent angles
Hypotenuse The longest side of a right triangle
Pytahagorean Theorem the sum of the squares of the lenths of the sides of a right triangle is equal to the square of the lenglth of the hypotenuse
Mode The value or item occurring most frequently in a series of observations or statistical data
Created by: monica_b