# Math

Math in Ruby is mostly what you would expect. + does addition, - does subtraction, * does multiplication, and / does division. Two other ones you might not know about are 2 asterisks, and %. 2 asterisks are for exponents. 5**2 is 5 to the power of 2, which is 25. % is a little weird. In Ruby, it isn't percent, it is modulo. Modulo is like division, but it gives you the remainder of the division problem.

```
moduloAnswer=5%2 #moduloAnswer=1
exponentAnswer=2**3 #exponentAnswer=8
```

## Exercise

Use math operations to turn old variables into new ones that the if statement will print true to the console when run.