The basic mathematical operators that you will use very often:

11+3 adds 3 to 11 and returns 14

17-5 subtracts 5 from 17 and returns 12

9*5 multiplies 9 by 5 and returns 45

12/3 divides 12 by 3 and returns 4

2^3 raises 2 to 3 and returns 8