To add -4 and 5, draw the starting number on a number line and count to the right when adding numbers. What is the difference in temperature between a desert at 40 °C and a mountain top at -2 °C? \(40 ...

Inequality symbols can be used to show which number is greater. For example, \(-2 \textless -1\) means -2 is less than -1. The wider part of the inequality sign faces the larger number. \(-1 ...