(Pre) Algebra Vocabulary
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26 terms
Terms | Definitions |
|---|---|
 associative property | grouping property; (a+b)+c=a+(b+c) OR (ab)c=a(bc) |
| commutative property | order property; a+b=b+a OR ab = ba |
| distributive property | changes the order of operations; a(b+c)=ab+ac |
| evaluate | substitute values for variables, then solve |
| zero property | x 0 always equals zero |
| identity property | + 0 or x 1 won't change the value |
| rational number | can be written as a fraction |
| integers | whole numbers and their opposites |
| irrational number | can't be expressed as a fraction |
| algebraic expression | contains variables, numbers and operations |
| numerical expression | contains numbers and operations |
| order of operations | PEMDAS |
| simplify | combining like terms |
| equation | mathematical sentence that contains an equals sign |
| absolute value | distance from zero on a number line |
| variable | a letter that stands for a number |
| opposites | numbers that are the same distance from zero but have different signs |
| like terms | terms that have the same variable |
| coefficient | a number in front of a variable |
| numerator | the top number of a fraction |
| denominator | the bottom number in a fraction |
| mixed number | a whole number and a fraction |
| improper fraction | the numerator is bigger than the denominator |
| proper fraction | the numerator is less than the denominator |
| simplest form | a fraction that can't be reduced |
| equivalent fractions | two different fractions that represent the same number |
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