| Term | Definition |
| Simplify | Do all possible calculations. |
| Integers | Whole number and their opposites. |
| Product | Answer to a multiplication problem. |
| Quotient | Answer to a division problem. |
| Dividend | The number that is being divided. |
| Divisor | The number by which the dividend is divided. |
| Sum | Answer to an addition problem. |
| Difference | Answer to a subtraction problem. |
| Square Numbers | Two of the same numbers that make a product. |
| Square Root | One of the equal factors of a square number. |
| Prime Number | A number that only has two factors, one and itself. |
| Composite Number | A number with more than two factors. |
| Factor | Numbers that multiply to form a product. |
| Multiple | Product of a given whole number and any other whole number. |
| Improper Fraction | When the numerator is larger than the denominator. |
| Mixed Number | A number named by a whole number and a fraction. |
| Numerator | The top part of a fraction. |
| Denominator | The lower part of a fraction. |
| Lowest Terms | Fractions whose numerator and denominator are relatively prime. |
| Simple Form | Mixed number with the fraction in lowest terms. |
| Terminating Decimal | A decimal that stops when it gets to a certain point. |
| Repeating Decimal | A decimal that never stops. |
| Ratio | A comparison of two or three quantities. |
| Rate | How many there is per quantity. |
| Proportion | An equation that states two ratios or rates are equivalent. |
| Cross Multiplying | In a proportion, multiplying the numbers diagonally. |
| Percent | Fraction out of 100. |
| Discount | Decrease in the price. |
| Markup | Increase in the price. |
| Parallel | Lines that never meet. |
| Perpendicular | Lines that cross each other at one point. |
| Complementary Angles | Two angles whose sum is 90 degrees. |
| Supplementary Angles | Two angles whose sum is 180 degrees. |
| Obtuse Angle | Angle over 90 degrees. |
| Acute Angle | Angle under 90 degrees. |
| Right Angle | A 90 degree angle. |
| Polygon | A closed figure. |
| Isosceles Triangle | A triangle that has two equal sides. |
| Equilateral Triangle | A triangle that has all equal sides. |
| Scalene Triangle | A triangle that has no equal sides. |
| Obtuse Triangle | A triangle over 90 degrees. |
| Acute Triangle | A triangle under 90 degrees. |
| Right Triangle | A 90 degree triangle. |
| Quadrilateral | A 4-sided polygon. |
| Pentagon | A 5-sided polygon. |
| Hexagon | A 6-sided polygon. |
| Octagon | An 8-sided polygon. |
| Decagon | A 10-sided polygon. |
| Rhombus | A quadrilateral with four equal sides. |
| Square | A quadrilateral with four equal sides and angles. |
| Rectangle | A quadrilateral with two equal sides. |
| Parallelogram | A quadrilateral with two pairs of parallel sides. |
| Trapezoid | A quadrilateral with one pair of parallel sides. |
| Perimeter | The size of something as given by the distance around it. |
| Area | The extent of a 2-dimensional surface enclosed within a boundary. |
| Circumference | The boundary-line of a circle. |
| Diameter | The distance across a circle. |
| Radius | Half the diameter. |