| base | lowest point |
| integers | whole numbers |
| positive number | any number greater than zero |
| negative number | any number less than zero |
| opposite numbers | negative and positive of a number |
| absolute value | distance from zero on the number line |
| simplify | reduce completely |
| evaluate | find the value of a variable expression |
| substitution | put in place of |
| liter | basic unit of capacity |
| gram | basic unit of mass |
| percent | number compared to one hundred |
| meter | basic unit of length in the metric system |