-0.511 < -0.51 -0.511 is farther to the left on the number line than -0.51 One way to remember it is to think of a °F (or °C) symbol after them: -0.511°F is a LOWER temperature than -0.51°F, so -0.511 is a LOWER number than -0.51. and you can say: -0.51°F is a HIGHER temperature than -0.511°F, so -0.51 is a HIGHER number than -0.511. Edwin