Area. Angle where two rays. Acute angle. Addend. a number to be added. an angle measuring less than 90 degrees. or line segments share an endpoint

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1 Acute angle Addend an angle measuring less than 90 degrees a number to be added Angle where two rays or line segments share an endpoint Area the measure of space inside a figure. Area is measured in square units

2 Axis one of the lines used to locate a point in a coordinate plane Bar graph graph that uses bars of different lengths to show and compare data a figure in which all Circle the points on the circle are the same distance from the center Circle graph a graph in the shape of a circle that shows data as a whole made up of parts

3 Column a vertical division of a table Common denominator Compare denominators that are the same to determine whether a number is more or less than another number Cone a solid figure that has one face that is a circle

4 Coordinate plane a plane formed by two intersecting and perpendicular number lines Cube a solid figure with 6 faces, which are all the same size Cylinder Decimal A solid figure with two faces that are circles. The bases are located on the top and bottom of the cylinder a number with one or more digits to the right of the decimal point

5 Decimal point Denominator a symbol used to separate dollars and cents in money and to separate the ones and the tenths place in a decimal the number below the bar in a fraction that tells how many equal parts in the whole Difference Dividend the answer to a subtraction problem the number that is to be divided in a division problem

6 Divisor Edge The number that divides the dividend The line segment where two faces meet Equilateral triangle A triangle with three sides of equal length Estimate A number close to an exact amount

7 Even numbers Expanded form Numbers divisible by 2. Even numbers always end with a digit of 0,2,4,6, or 8 Way of writing a number by showing the value of each digit Face Factor A flat surface on a solid figure A number that is multiplied by another number to find a product

8 Fair Foot Fraction Function All possible outcomes have the same probability Customary unit of length equal to 12 inches A number that names a part of a whole and has a numerator and a denominator A rule applied to an input value to produce an output value

9 Hexagon A polygon with 6 sides Hour A unit used to measure time; 60 minutes=1 hour Inch Customary unit of length; 12 inches = 1 foot Intersecting lines Lines that cross each other at exactly one point to form angles

10 Isosceles triangle A triangle with two sides of equal length Line A straight figure that continues in both directions without end Line of symmetry Line plot And imaginary line that evenly divides a figure. When the figure is folded on the line of symmetry, both halves are exactly the same. A graph made on a grid that shows how something has changed over time

11 Line segment Part of a line that has two endpoints Mass A property of an object that in part determines how much it weighs Mile Minute Customary unit of length equal to 5,280 feet A unit to measure short amounts of time; 60 seconds = 1 minute

12 Model Multiple Number line A representation of a real-world situation The product of a given number and another number A line with equally spaced tick marks that represent numbers. Numerator The number above the bar in a fraction that tells how many parts of the whole are being considered.

13 Obtuse angle Octagon Odd numbers An angle measuring over 90 degrees and less than 180 degrees A polygon with 8 sides Numbers that cannot be evenly divided into groups of 2 and are not divisible by 2. Odd numbers end with a digit of 1,3,5,7, or 9 Order To list numbers from least to greatest or greatest to least

14 Ordered pair Ounce Parallel lines A pair of numbers that represents the location of a point on a coordinate plane Customary unit of weight; 16 ounces =1 pound Lines that never cross and are always the same distance apart Pattern A predictable arrangement of objects

15 Pentagon Perimeter Perpendicular lines pictograph A polygon with five sides The distance around a figure. To find the perimeter of any shape, add the lengths of the sides. Intersecting lines that cross to form four right angles A type of graph that uses pictures to represent data

16 Place value Point Polygon Pound The value of each digit in a number depending on its position in the number An exact location or position A closed plane figure made of line segments that create straight sides Customary measure of weight equal to 16 ounces

17 Probability The chance that a particular event will happen Product The answer in a multiplication problem Pyramid A solid figure with faces that are all triangles and one base. The base can be a square or another polygon Quadrilateral A polygon with 4 sides and 4 angles

18 Quotient Ray A Rectangle Reflection The number not including the remainder, that results from division part of a line that has one endpoint, The ray starts at the endpoint and continues in one direction without ending A polygon with 4 sides and 4 square angles. The opposite sides are equal. The movement of a figure to a new location by flipping the figure over a line

19 Remainder The number left over after division Rhombus Right angle Rotation A polygon with 4 equal sides An angle that measures exactly 90 degrees The movement of a figure in a plane to a new location by turning the figure around a point

20 Rounding A method used to find an estimate Scalene triangle Second Side A triangle with 3 unequal sides A small unit of time 60 seconds = 1 minute One of the line segments that form a polygon

21 Sum Tally table The total of numbers that are added A table that shows tally marks Three-dimensional figure Figure that has length, width, and height Trapezoid A polygon with 4 sides and only one pair of parallel sides

22 Triangle A polygon with 3 sides Two-dimensional figure Figure that has only length and width Variable A letter used to represent a missing value Weight Measure of how heavy something is

23 Whole number One of the numbers 0,1,2,3,4,5,and so on Yard Customary measure that equals 3 feet