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8th Math 1st 9wks
Real Number System and Order of Operations
| Term | Definition |
|---|---|
| Real Number | All numbers (both rational and irrrational) |
| Natural Number | Counting numbers |
| Whole Number | Counting numbers including zero |
| Integer | Whole numbers and their opposites |
| Rational Number | Numbers that can be written as a fraction, repeating, or terminating decimal |
| Irrational Number | Numbers that can not be written as a fraction,repeating, or terminating decimals |
| Square Root | One of two equal factors of a number |
| Repeating Decimals | Decimals whose digits repeat in groups of one or more |
| Terminating Decimals | Decimals whose digits end |
| Variable | A letter that represents an unknown value |
| Numerical Expression | A mathematical expression that has a combination of numbers and at least one operation symbol |
| Algebraic Expression | A mathematical expression that has a combination of numbers, letters, and at least one operation symbol |
| Equation | A mathematical sentence that contains an equal sign |
| Simplify | Solve a numerical expression |
| Evaluate | To find the value of an expression by replacing (substituting) the variables with numbers |
| Power | Numbers written using exponents that represent repeated multiplication |
| Order of Operations | Rules that are followed when more than one operation is used in an expression |
| Solve | The process of finding valus of the variables that make the equation true |
| Solution | Values that are true to an equation |
| Inverse Operations | Operations that undo each other (addition:subtraction, multiplication:division) |
| Open Sentence | An equation that contains one or more variables |
| Pythagorean Theorem | Describes the relationship between the lengths of the legs and the hypotenuse of any right triangle |
| Right Triangle | A triangle with one right angle |
| Hypotenuse | Side opposite the right angle and known as the longest side |
| Legs | The sides that form the right angles |
| Coordinate Plane | Formed by the intersection of two number lines that produces four right angles |
| Origin | The point of intersection of the x and y axis |
| Quadrants | The four sections created by the intersection of the x and y axis |
| X-axis | The horizontal number line |
| Y-axis | The vertical number line |
| Ordered Pair | The x and y values graphed on the coordinate plane |
Created by:
tamarablyons
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