| A | B |
|---|
| Addend | A number that is added in an addition problem. |
| Angle | A corner formed where two lines meet. |
| Area | The number of squares of a certain size that it takes to cover a given surface. |
| Average | The number that would be in each group if the items were rearranged so that each group had the same number of items. |
| Bar Graph | A graph that uses bars to show the information. |
| Circumference | The distance around a circle; the curved line that bounds a circle. |
| Common Denominator | Two fractions have common denominators if the denominators are equal. |
| Decimal Number | A number that uses digits and a decimal point. |
| Decimal Point | A dot used to separate the whole part of a decimal number from the fractional part of the decimal number. |
| Denominator | The bottom number of a fraction. This number tells the total number of parts in the whole. |
| Diameter | The distance across a circle through the center. |
| Difference | The answer to a subtraction problem. |
| Digit | Any of the following symbols: 0,1,2,3,4,5,6,7,8,9. |
| Division Bar | The bar that separates the numerator of a fraction from the denominator of the fraction. Also called the fraction bar. |
| Equal | Has the same value as. |
| Equivalent Fraction | Two or more fractions that have the same value. |
| Estimate | To determine mentally an approximate answer to a problem. |
| Expanded Form | A way of representing a number which uses the sum of the products of each digit and the place value of each digit. |
| Factor | Any number that is multiplied. |
| Fraction | A number used to designate part of a whole. |
| Geometric Solid | A geometric shape that takes up space. |
| Graph | A picture that shows number information about a certain topic. |
| Greater than | Has a larger value than. |
| Hexagon | A six sided polygon. |
| Improper Fractions | A fraction that is greater than or equal to 1. |
| Intersecting Lines | Lines that cross one another. |
| Less than | Has a smaller value than. |
| Line Graph | A graph that displays information by lines that connect data points. |
| Line Segment | A part of a line. |
| Mixed Number | A whole number followed by a fraction. |
| Multiple | A number found by multiplying a given number by a whole number greater than zero. |
| Number Line | A line on which a number is associated with each evenly spaced mark. |
| Numerator | The top number of a fraction. This number tells the number of parts being described. |
| Octagon | An eight sided polygon. |
| Parallel lines | Lines that stay the same distance apart. |
| Pentagon | A five sided polygon. |
| Perimeter | The distance around a polygon. |
| Perpendicular Lines | Intersecting lines which form right angles. |
| Pictograph | A graph that uses pictures of items to show information. |
| Pie Graph | A graph that represents information using a circle divided into sections that look like slices of pie. |
| Polygon | Straight-sided closed plane figure. |
| Probability | The likelihood that something will happen. |
| Product | The result of multiplying. |
| Quadrilateral | A four sided polygon. |
| Quotient | The answer to a division problem. |
| Radius | The distance from the center of a circle to the edge of the circle. |
| Reduced Fraction | An equivalent fraction written with smaller numbers. |
| Right Angle | A square corner. |
| Roman Numerals | Letters used by the ancient Romans to write numbers. |
| Scale | A type of number line often used for measuring. |
| Segment | A part of a line. |
| Sequence | An orderly arrangement of numbers determined by following a certain rule. |
| Square Unit | A square with sides of designated length. |
| Sum | The answer to an addition problem. |
| Table | A way of presenting information in rows and columns. |
| Tally marks | Short, straight marks used for keeping track of the number of times that something occurs. |
| Triangle | A three sided polygon. |
| Whole Numbers | Any of the numbers in this sequence: 0,1,2,3,4,5,.... |
