Other forms: computing; computed; computes
When you solve a mathematical problem, you compute the answer. To compute is to calculate, either literally or figuratively.
Computers do the math for you, faster than humans ever can. You'll often hear someone say that something "does not compute." This means it doesn't add up, it doesn't make sense. You might compute how long it will take you to get to school or the likelihood that your mother will let you stay out late.