GED Math Exam With Correct Answers

GED Math Exam With Correct Answers Box plot - a way of graphically depicting groups of numerical data through their quartiles consecutive numbers - numbers in counting order Data - a collection of facts, such as numbers, words, measurements, observations or even just descriptions of things Dot plot - a graphical display of data using dots Function - a special relationship where each input has a single output. It is often written as "f(x)" where x is the input value Graph - a diagram that shows a relationship among numbers Histogram - a graphical representation of the distribution of numerical data Mean - the sum of a set of numbers divided by the number of numbers in a set (AKA average) Median - a number in the middle of a set of numbers, or the mean of the two middle numbers in a set Mode - The mode of a set of numbers is the one that occurs most often. So, in the set {1,5,7,5,9}, the mode is 5 because there are 2 fives and only one of each of the others. Permutation - relates to the act of rearranging, or permuting, all the members of a set into some sequence or order (unlike combinations, which are selections of some members of the set where order is disregarded) Probability - the chance of an event happening, usually expressed as the ratio of the number of favorable outcomes to the total number of outcomes Proportion - a statement that two ratios (or fractions) are equal Scientific notation - a number written as the product of a number between 1 and 10 and a power of 10 Unit rate - describes how many units of the first type of quantity corresponds to one unit of the second type of quantity. Some common unit rates are miles (or kilometers) per hour, cost per item, earnings per week, etc. Ratio - comparison between two numbers. Separated by a colon (:), the word "to", or may be written in fraction form. Cross Products - The product of the numbers which are diagonal from one another in a proportion equation. Should be equal on both sides. Common denominator - for a set of fractions, a number into which each denominator can divide evenly Denominator - the bottom number in a fraction Difference - the answer to a subtraction problem Digit - one of the ten number symbols. The digits are 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9. Equation - a statement that two amounts are equal Estimate - as a noun: an approximate value. as a verb: to find an approximate value. Fraction - a part of a whole Greatest common factor - the greatest factor that divides two numbers Improper fraction - a fraction in which the numerator is greater than or equal to the denominator Least common multiple - the smallest positive number that is a multiple of two or more numbers. Example: the Least Common Multiple of 3 and 5 is 15, because 15 is a multiple of 3 and also a multiple of 5. Other common multiples include 30 and 45, etc, but they are not the smallest (least). Mixed number - a number with both a whole number and a fraction Numerator - the top number in a fraction Product - the answer to a multiplication problem Proper fraction - a fraction in which the numerator is less than the denominator Sum - the answer to an addition problem Commutative property - for addition and multiplication, numbers can be added or multiplied in any order. The sum or product will be the same. For any numbers a and b, a+b+=b+a and ab=ba Coordinate plane - a flat surface divided by a horizontal x-axis and a vertical y-axis Coordinates / ordered pair - a pair of numbers in the form (x,y) that identify the distance of a point from the origin or center on the coordinate plane. The first number tells the distance to the left or right of the vertical axis, and the second number tells the distance above or below the horizontal axis Cube - a number multiplied by itself three times (2^3, or 2 x 2 x 2 = 8) Cube root - the opposite of the cube of a number; a square root, but to the 3rd power, rather than the 2nd. (the cube root of 8 is 2, because 2 x 2 x 2 = 8) Distributive property of multiplication - when multiplying a number by a sum or a difference, you may first multiply each number in the sum or difference, or you can find the sum or difference and then multiple. For any numbers a, b, and c, a(b+c) = ab+bc and a(b-c) = ab-ac. Evaluate - to find the value of a numerical or algebraic expression; to solve an equation Exponent - a number that tells the power to which a base is raised. For example, in 3^2, the base is 3 and the exponent is 2. Factor - as a noun: a number that divides evenly into another number as a verb: to write a number or an algebraic expression as a product of two or more terms Formula - a mathematical rule that tells the relationship between quantities Function - a special relationship where each input has a single output. It is often written as "f(x)" where x is the input value Inequality - a statement that two amount are not equal. For example, (less than) or (greater than) Linear equation - an equation whose graph is a straight line Permutation - relates to the act of rearranging, or permuting, all the members of a set into some sequence or order (unlike combinations, which are selections of some members of the set where order is disregarded) Quadratic equation - an equation in which at least one variable is raised to the second power Scientific notation - a number written as the product of a number between 1 and 10 and a power of 10 Square root - one of two equal factors of a number Unknown OR Variable - a symbol, usually a letter, that represents a solution to an equation Area - a measure of the amount of surface on a closed plane figure Circle - a plane figure, each point of which is the same distance from the center Circumference - the distance around a circle Cone - a 3-dimensional figure whose base is a circle and whose height is the perpendicular distance from the base to the vertex Congruent figures - geometric figures with exactly the same shape and same size Cylinder - a 3-dimensional figure that has both a circular base and a circular top, and whose height is the perpendicular distance from the top to the bottom Diameter - the distance across and through the center of a circle Hypotenuse - in a right triangle, the side opposite (across from) the right angle Legs - the two shorter sides in a right triangle Line - a straight path of points that continues in two opposite directions Line segment - a straight path of points with definite length, having two endpoints. Parabola - the curve formed by the graph of a quadratic equation Parallel lines - lines that run in the same direction and do not cross Parallelogram - a four-sided figure with two pairs of parallel lines Perimeter - the distance around a closed plane figure Perpendicular lines - lines that intersect at a right angle Pi - the Greek letter that represents the ratio of the circumference of a circle to its diameter. The approximate value of pi is 3.14 or 22/7 Plane - a flat surface Polygon - a closed plane figure formed by three or more line segments that meet only at their end points Prism - a solid object with two identical ends and flat sides Pythagorean Theorem - for a right triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides. The formula is a^2 + b^2 = c^2, where a and b are the legs of a right triangle and c is the hypotenuse Quadrilateral - a closed figure with four sides Radius - the distance from the center of a circle to its circumference Rectangle - a four-sided figure with four right angles and with two pairs of parallel sides Rectangular Prism - a 3-dimensional figure in which each face is a rectangle Rhombus - a four-sided figure with four equal sides Right angle - an angle that measures exactly 90 degrees Right triangle - a triangle with one right angle Similar figures - geometric figures with the same shape but not necessarily the same size Slope - the measure of the "steepness" of a line on the coordinate plane. The slope is defined as the change in y values divided by the change in x values. Sphere - a 3-dimensional figure each point of which is an equal distance from the center Square - a four-sided figure with four right angles, four equal sides, and two pairs of parallel sides Square pyramid - a 3-dimensional figure whose base is a square and each of whose four triangular faces meet a a common point called the vertex Surface area - the total area of the surface of a three-dimensional object Trapezoid - a four-sided figure with one pair of parallel sides Triangle - a closed plane figure with three sides and three angles