| A | B |
| rate | a ratio of two numbers that have different units |
| unit rate | a rate with a denominator of 1 |
| rate conversion | a process of changing at least one unit of measurement in a rate to a different unit of measurement |
| ratio | a comparison of two numbers using division |
| complex fraction | a fraction that contains a fraction in its numerator, denominator, or both |
| conversion | the process of renaming a measurement using different units |
| customary units | a system of measurement used in the US that includes units for measuring length, capacity, and weight |
| metric units | a system of measurement based on tens. |
| proportion | an equation stating two ratios are equivalent |
| scale factor | the ratio of corresponding sides in two similar figures |
| congruent figures | two figures that have the exact same shape and the exact same size |
| similar figures | two figures that have the same shape, but not necessarily the same size |
| congruent | equal in measure |
| corresponding parts | the angles and sides in similar or congruent figures that match |
| cross products | the product of one numerator and the opposite denominator in a pair of equivalent fractions |
| equivalent fractions | two or more fractions that represent the same number |
| discount | the decrease in the price of an item |
| percent of change | the percent a quantity increases or decreases compared to the original amount |
| percent of increase | the percent of change when the new amount is more than the original amount |
| percent | a ratio that compares a number to 100 |
| sales tax | an amount added to the cost of an item usually based on a percentage |
| mark-up | the increase in the price of an item |
| percent of decrease | the percent of change when the new amount is less than the original amount |
| part | the number that you have |
| whole | the total number |