| A | B |
| contradiction | an equation which is never true |
| conversion factor | a ratio of two equal quantities with different units |
| discount | the amount decreased from the original amount |
| equation | a mathematical sentence that shows two expressions are equivalent |
| formula | a literal equation that states a rule for a relationship |
| identity | an equation which is always true |
| percent | a ratio out of one hundred |
| percent increase | the ratio of the amount of increase over the original amount |
| percent decrease | the ratio of the amount of decrease over the original amount |
| proportion | an equation that states two ratios are equal |
| rate | a ratio that compares two quantities measured in different units |
| ratio | a comparison of two numbers by division |
| scale | the ratio between two corresponding measurements |
| scale drawing | a drawing that uses a scale to represent an object as smaller or larger than the actual object |
| scale factor | the multiplier used on each dimension to change one figure into a similar figure |
| solution to an equation | a value that makes an equation true |
| unit rate | a rate in which the second quantity in the comparison to one unit |
| prime numbers | a number that can only be divided by itself and one. |
| integers | a set of numbers which include the counting numbers and their negatives |
| real numbers | a set of numbers including the rational numbers and irrational numbers |
| factors | a number which can be evenly divided into another |
| union | the set consisting of the elements in one set OR the other |
| intersection | the set consisting of elements in one set AND another |
| rational number | a number which can be written as a fraction |
| consecutive | object that are in a row. |
| prime factorization | the expression of a composite number into a product of two or more primes |
| composite | a number which has factors other than itself and one |
| common denominator | the smallest equal denominator of two fractions |
| least common multiple | the smallest number that can be divided by both numbers |
| greatest common divisor | the largest number divisible into both numbers |