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STAAR Review 1
| Term | Definition |
|---|---|
| factor | Any number multiplied to form a product. A product can be divided by one factor to find the other factor. |
| inverse | Reversed position or direction |
| common denominator | A number that is a multiple of all denominators in a problem. |
| prime number | A number with only two factors: the number itself and one. |
| range | The difference between the least and greatest values in a set of numbers. |
| integers | All whole numbers (both positive and negative) and zero. |
| mean | The sum of a group of numbers divided by the number of numbers. Also known as the average. |
| median | A value found by ordering a group of data from least to greatest and choosing the middle value of the group. |
| composite number | A positive whole number with more than two factors. In other words, a number that is not prime. Zero and one are neither composite nor prime. |
| percent | The ratio of a number to 100 (per one hundred). The symbol % |
| proportion | An equation stating that two ratios are equal |
| unit ratio | A ratio that shows the cost per unit of measure |
| interquartile range (IQR) | The difference between the upper quartile and the lower quartile |
| rational numbers | All whole numbers (both positive and negative), zero, and decimals and fractions |
| reciprocal | used to divide two fractions, when you flip the numerator and denominator in order |
| exponent | multiply the number by itself |
| absolute value | the distance from zero, always positive |
| of | word that suggests using multiplication |