This worksheet provides skill practice for number lines. Exercises include identifying positive and negative numbers on a number line, determining units traveled between numbers, identifying greater-than and less-than values on a negative/positive number line, identifying temperatures on a thermometer marked in increments of 2, and identifying the significance and use of negative and positive integers (i.e. - negative indicates a loss, positive a gain, etc.) Worksheet is two pages with key included. Good review practice for standardized testing.