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7th Grade Math Final
These are terms and definitions that will help you with your vocabulary.
| Term | Definition |
|---|---|
| Annex | when you add a zero as a place holder to complete the operation |
| Quotient | the answer to a division problem |
| Dividend | (inside) number being broken |
| Divisor | (outside) telling how many times to break apart |
| Reciprocal | when you flip the numerator and denominator of a fraction |
| Integer | whole numbers and their opposites |
| Property | a rule or statement that is always true |
| Numerical Expression | an expression that contains numbers and operations |
| Numerical Statement | an equation that sets two expressions equal to each other |
| Algebraic Expression | same as numerical, but uses variables( x, y, etc) |
| Constant | number that stays the same and does not have a variable |
| Coefficient | the number that relies on the variable |
| Ratio | a comparison of 2 quantities of the same unit |
| Rate | a ratio that compares 2 different units |
| Unit Rate | a rate expressed in terms of 1 unit |
| Proportions | an equation stating that 2 ratios are equivalent |
| Cross Products | when you multiply diagonally across a proportion to prove proportionality |
| Rate of Change | the ratio of output values to corresponding input values |
| Constant Rate of Change | when the rate of change stays the same |
| Constant of Proportionality | a rate of change that is proportional |
| Scale | when you change the size of an object by a specific ratio |
| Scale Drawing | a drawing that represents an object as an enlargement or reduction of the size of the actual object |
| Scale Factor | the number used to multiply original dimensions by to shrink or enlarge |
| Percent | a ratio that compares a number to 100 using the percent symbol |
| Sales Tax | a percent of the sale added to the sale price of an item |
| Tip | an optional payment to someone who provides good service |
| Commission | a fee paid for services, usually a percent of the total cost |
| Markup | a percent increase to the sale price of an item |
| Discount | a percent decrease to the sale price of an item |
| Interest | a percent added on to the total (usually a loan) |
| Complementary | 2 angles whose measure, when added, equals 90 |
| Supplementary | 2 angles whose measure, when added, equals 180 |
| Adjacent | (touching) 2 angles that share a vertex and one common ray |
| Acute Angle | an angle that is smaller than 90 |
| Obtuse Angle | an angle between 91 ans 179 |
| Straight Angle | exactly 180 |
| Right angle | exactly 90 |
| Vertical Angle | 2 angles that are at the same intersection but opposite sides |
| Interior Angles | angles on inside of a figure |
| Similar Figures | figures who's angles are congruent and corresponding sides are proportional |
| Congruent | same size same shapes |
| Corresponding Parts | same part, different shape |
| Indirect Objects | objects that are not specifically related to each other, but can be used to find measurements |
| Composite Figure | a figure made up of 2 or more smaller figures |
| Semi Circle | half of a circle |
| Quarter Circle | 1/4 of a circle |
| Lateral Area | the sum of the lateral faces of a solid |
| Surface Area | sum of ALL the faces, including the bases, of a solid |
| Volume | the capacity of a 3-D object |
| Probability Experiment | the process of observing an outcome when there is chance involved (cannot be sure of the outcome) |
| Probability | the outcome of a probability experiment |
| Theoretical Probability | probability determined from what variable or written description |
| Estimated Probability | probability determined from actual, tested results |
| Complement | (marked with an apostrophe after the parenthesis) |
| Comparing Probability | the event that is most general will always have the greater probability |
| Sample Space | for a probability experiment is the set of all possible outcomes |
| Tree Diagram | is a diagram that represents the total possible outcomes |
| Random Digits | are digits arranges in random order |
| Simulation | when an artificial process for generating an outcome is substituted for probability |
| Population | the whole group you are interested in learning about |
| Census | is a study where data is collected from everyone in the whole population |
| Sample | a small part that is representative of the whole |
| Sample Mean | the average of the data for a sample |
| Population Mean | the average of the data values for the WHOLE population |
| Random Sample | a sample that is formed by selecting individuals from the population at random |
| Quartile 3 | median of the upper half |
| Quartile 1 | median of the lower half |
| Median | (Quartile 2) middle number |
| Minimum | lowest value |
| Maximum | highest value |
| IQR | (Inter Quartile Range) Quartile 3 minus Quartile 1 |
| Range | max minus the min |
Created by:
StarDancer_2019
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