Write, interpret, and explain statements of order for rational numbers in real-world contexts. For example, write – 3 °C > – 7 °C to express the fact that – 3 °C is warmer than – 7 °C.,Recognize opposite signs of numbers as indicating locations on opposite sides of 0 on the number line; recognize that the opposite of the opposite of a number is the number itself, e.g., – (- 3) = 3, and that 0 is its own opposite.