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Math final review!!
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Terms in this set (73)
Addend
The numbers added together in an adition problem
Sum
The answer to an addition problem
difference
the answer to a subtraction problem
factor
the numbers multiplied together in a multiplication problem
Product
The answer to a multiplication problem
Dividend
The number being divided
Divisor
The number that divides
quotient
the answer to a division problem
Integer
A positive or negative whole number
Signed number
A positive or negative number that can be a whole number, fraction or decimal
Absolute value
How far a number is from zero on the number line. (If is always a positive number)
Rules for adding integers
1. If the signs are the same, add the numbers and keep the same sign. 2. If the signs are different, subtract the numbers and use the sign of the greater number.
Two negatives equals
A positive
How to subtract integers
1. Keep the first number the same. 2. Change the subtraction sign to addition. 3. Change the sign of the 2nd number to its opposite.
Different signs
Answer is negative
Commutative property
When adding or multiplying numbers, the order does not matter
Associative property
When you are adding or multiplying numbers, the grouping (parentheses) does not matter
Identity Property of Addition
Adding zero to a number does not change the value of the number
Identity Property of Multiplication
Multiplying 1 and any number does not change the value of the number.
Exponent
Tells you how many times to multiply
Base
The number to multiply
Pemdas
Parentheses (included absolute value) , exponent (includes square roots), multiply or divide (in order from left to right), add or subtract (left to right)
Like terms
Have the same variable and exponent
Coefficient
The number part of the term
Constant
A term that has no variable
Like terms
The same variable and exponent
Numerical equation
Contains only numbers and operations
Algebraic equation
Contains one or more variables and at least one mathematical operation. It may also contain numbers.
Irrational numbers
1. A square root that is not a perfect square. (Ex. 1.0.10010000100000...) 2. A decimal that does not end and does not repeat. 3. A symbol that represents a number that goes on and on. (Ex. Pie)
Natural number
Counting number. Ex. 1,2,3,4...
Whole numbers
Naturals numbers and zero. Ex. 0,1,2,3,4...
Prime number
A number that only one and itself goes into
Composite
A number that more than one and itself goes into
Greatest common factor
The greatest number that goes into two or more other numbers
Proper factor
All the factors of a positive integer
Perfect number
When all of the factors add up to the number (positive integer) it goes into. Ex 6, 1+2+3=6
Density property
An infinite number of rationale numbers can be found between any two rational numbers
Unit
How much one thing in a group costs
Proportion
An equation that shows that two rations are even
Discount
Amount of money you get off the price. Subtract if from its original amount
Sale price
The amount you actually pay after you subtract the discount
Complementary angle
Two angles with the sum of 90 degrees
Supplementary angles
Two angles with the sum of 180 degrees
Adjacent angles
They have a common vertex and a common side but do not share any interior points
Verticals angles
Angles that share the same vertex and are opposite each other. They have the same measure.
Congruent
Same measure
Transversal
A line that crosses a pair of parallel lines
Interior angles
Numbers or points inside angles or parallel lines
Exterior angles
Numbers or points outside of an angle or parallel lines
corresponding angles
Angles that are in the same side of te transversal and same side of the parallel lines. The measures are equal.
Alternate interior angles
Angles that are between the parallel lines and have the same measure. They are on opposite sides of the transversal. Sometimes called "Z" angles.
Regular
All sides and angles have the same measure
Polygon
A closed plane figure that have three or more sides and the sides are line segments
How many degrees are a triangle
180
Acute triangle
All 3 sides of a triangle less than 90 degrees
Right triangle
One angle of the triangle is equal to 90 degrees
Obtuse triangle
One angle of the triangle is greater than 90 degrees
Equilateral
All three sides of the triangle is equal
isosceles
Two sides of a triangle are equal
Scalene
All three sides of a triangle are different
A rhombus
A parallelogram with 4 congruent sides
A square
A parallelogram with 4 right angles and 4 congruent sides
A trapezoid
A quadrilateral with exactly 1 pair of parallel sides
A kite
A quadrilateral with two pairs of adjacent sides that are congruent. The measured of its angles are ,was than180 degrees
Area
Always measured with square feet (A=bh) area equals base times hight
Triangle
3 sides
Quadrilateral
4 sides
Pentagon
5 sides
Hexagon
6 sides
Septagon
7 sides
Octagon
8 sides
Nonagon
9 sides
Decagon
10 sides
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