The rule for multiplying and dividing is very similar to the rule for adding and subtracting. a) We have \({+5}\) and \({-4}\). The signs are different, so the answer ...

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 ...

Most people break out in a cold sweat when they see fractions. There's something about those little lines and numbers stacked on top of each other that makes even confident adults feel like they're ...